Some Essential oils stated as safe during pregnancy when applied topically and properly diluted are listed below. Essential oils work with the body, not against it. The body should remain in control with low doses of oils. You may also want to try the fragrance oil bath bombs.
For pregnancy, a recommended essential oil dilution is about 1% or less, for skin applications by massage or compress. A Good Soak's dilution ratios are based on ounces. As close as we can calculate....Bath Bombs 0.9-1.1%. Body Butter 0.5-0.8%. Sugar Scrub about 1.4%. Repair & Renew salve about 1.5%.
Epsom salt is a pregnant woman's ally. It is one of the primary ingredients for A Good Soak's bath bombs. The natural remedy for aches and pains has a remarkably long history. It's been used as a treatment for different pregnancy problems for centuries. "Pregnant women must be so careful about the medications that they can take to alleviate the many discomforts of pregnancy. Epsom salt baths are not only safe in pregnancy, but also a great way to relax and soothe tired muscles." Nicole Galan, RN
"It is extremely unlikely that a nightly bath containing a few drops of essential oils will cause any problems for the unborn child." Bensouilah J, and Buck P. Aromadermatology. Abindon, UK: Radcliffe Publishing Ltd.
Various pregnancy related conditions can be helped with topical aromatic essential oil applications. Abdominal Discomfort - Lavender. Heartburn - Sandalwood/Roman Chamomile. Hemorrhoids - Sandalwood. Stretch Marks - Lavender/Frankincense/ Rose/ Chamomile Roman. Varicose Veins - Sandalwood. Water Retention - Geranium.
For pregnancy, a recommended essential oil dilution is about 1% or less, for skin applications by massage or compress. A Good Soak's dilution ratios are based on ounces. As close as we can calculate....Bath Bombs 0.9-1.1%. Body Butter 0.5-0.8%. Sugar Scrub about 1.4%. Repair & Renew salve about 1.5%.
Epsom salt is a pregnant woman's ally. It is one of the primary ingredients for A Good Soak's bath bombs. The natural remedy for aches and pains has a remarkably long history. It's been used as a treatment for different pregnancy problems for centuries. "Pregnant women must be so careful about the medications that they can take to alleviate the many discomforts of pregnancy. Epsom salt baths are not only safe in pregnancy, but also a great way to relax and soothe tired muscles." Nicole Galan, RN
"It is extremely unlikely that a nightly bath containing a few drops of essential oils will cause any problems for the unborn child." Bensouilah J, and Buck P. Aromadermatology. Abindon, UK: Radcliffe Publishing Ltd.
Various pregnancy related conditions can be helped with topical aromatic essential oil applications. Abdominal Discomfort - Lavender. Heartburn - Sandalwood/Roman Chamomile. Hemorrhoids - Sandalwood. Stretch Marks - Lavender/Frankincense/ Rose/ Chamomile Roman. Varicose Veins - Sandalwood. Water Retention - Geranium.

BANANA Fragrance Oil

BERGAMOT Essential Oil
Aromatic Description: Fresh, orange/lemon/citrusy, slightly floral.
Emotional: Anger, anxiety, confidence, depression, stress, fatigue, fear, peace, happiness, insecurity and loneliness.
Possible Uses: Acne, abscesses, anxiety, boils, cold sores, cystitis, depression, halitosis, itching, loss of appetite, oily skin, psoriasis, stress.
Aromatic Description: Fresh, orange/lemon/citrusy, slightly floral.
Emotional: Anger, anxiety, confidence, depression, stress, fatigue, fear, peace, happiness, insecurity and loneliness.
Possible Uses: Acne, abscesses, anxiety, boils, cold sores, cystitis, depression, halitosis, itching, loss of appetite, oily skin, psoriasis, stress.

CHAMOMILE ROMAN Essential Oil
Aromatic Description: Bright, crisp, sweet, fruity, herbaceous.
Emotional: Anger, anxiety, depression, fear, irritability, loneliness, insomnia and stress.
Possible Uses: Abscesses, allergies, arthritis, boils, colic, cuts, cystitis, dermatitis, dysmenorrhea, earache, flatulence, hair, headache, inflamed skin, insect bites, insomnia, nausea, neuralgia, PMS, rheumatism, sores, sprains, strains, stress, wounds.
Aromatic Description: Bright, crisp, sweet, fruity, herbaceous.
Emotional: Anger, anxiety, depression, fear, irritability, loneliness, insomnia and stress.
Possible Uses: Abscesses, allergies, arthritis, boils, colic, cuts, cystitis, dermatitis, dysmenorrhea, earache, flatulence, hair, headache, inflamed skin, insect bites, insomnia, nausea, neuralgia, PMS, rheumatism, sores, sprains, strains, stress, wounds.

COCONUT Fragrance Oil

EUCALYPTUS Essential Oil
Aromatic Description: Eucalyptus Oil is fresh, medicinal, woody, earthy.
Emotional: Concentration, memory
Possible Uses: Arthritis, bronchitis, catarhh, cold sores, colds, coughing, fever, flu, poor circulation, sinusitis.
Aromatic Description: Eucalyptus Oil is fresh, medicinal, woody, earthy.
Emotional: Concentration, memory
Possible Uses: Arthritis, bronchitis, catarhh, cold sores, colds, coughing, fever, flu, poor circulation, sinusitis.

FRANKINCENSE Essential Oil
Aromatic Description: Fresh, woody, balsamic, slightly spicy and fruity.
Emotional: Anxiety, depression, fatigue exhaustion and burnout, fear, grief, happiness and peace, insecurity, loneliness, panic and panic attacks and stress
Possible Uses: Anxiety, asthma, bronchitis, extreme coughing, scars, stress, stretch marks. Has been known to assist with
healing of skin cancer.
Aromatic Description: Fresh, woody, balsamic, slightly spicy and fruity.
Emotional: Anxiety, depression, fatigue exhaustion and burnout, fear, grief, happiness and peace, insecurity, loneliness, panic and panic attacks and stress
Possible Uses: Anxiety, asthma, bronchitis, extreme coughing, scars, stress, stretch marks. Has been known to assist with
healing of skin cancer.

GERANIUM Essential Oil
Aromatic Description: Floral, fresh, sweet, with a fruity note.
Emotional: Anxiety, depression, happiness, mood imbalance and stress
Geranium Oil Uses: Acne, cellulites, dull skin, lice, menopause, oily skin.
Aromatic Description: Floral, fresh, sweet, with a fruity note.
Emotional: Anxiety, depression, happiness, mood imbalance and stress
Geranium Oil Uses: Acne, cellulites, dull skin, lice, menopause, oily skin.

GRAPEFRUIT Essential Oil
Aromatic Description: Citrusy. Tangy like grapefruit, but sweet. It is reminiscent to the aroma of the grapefruit rind, but more concentrated.
Emotional: Confidence, fear depression, happiness and peace, and stress
Possible Uses: Cellulitis, dull skin, toxin build-up, water retention.
Aromatic Description: Citrusy. Tangy like grapefruit, but sweet. It is reminiscent to the aroma of the grapefruit rind, but more concentrated.
Emotional: Confidence, fear depression, happiness and peace, and stress
Possible Uses: Cellulitis, dull skin, toxin build-up, water retention.

LAVENDER Essential Oil
Aromatic Description: Lavender Oil is floral, fresh, sweet, herbaceous and sometimes slightly fruity. It can be slightly camphorous.
Emotional: Anxiety, depression, irritability, panic attacks and stress
Possible Uses: Acne, allergies, anxiety, asthma, athlete's foot, bruises, burns, chicken pox, colic, cuts, cystitis, depression, dermatitis, dysmenorrhea, earache, flatulence, headache, hypertension, insect bites, insect repellant, itching, labor pains, migraine, oily skin, rheumatism, scabies, scars, sores, sprains, strains, stress, stretch marks, vertigo, whooping cough.
Aromatic Description: Lavender Oil is floral, fresh, sweet, herbaceous and sometimes slightly fruity. It can be slightly camphorous.
Emotional: Anxiety, depression, irritability, panic attacks and stress
Possible Uses: Acne, allergies, anxiety, asthma, athlete's foot, bruises, burns, chicken pox, colic, cuts, cystitis, depression, dermatitis, dysmenorrhea, earache, flatulence, headache, hypertension, insect bites, insect repellant, itching, labor pains, migraine, oily skin, rheumatism, scabies, scars, sores, sprains, strains, stress, stretch marks, vertigo, whooping cough.

LEMON Essential Oil
Aromatic Description: Aroma is similar to fresh lemon rinds except richer and more concentrated.
Emotional: Fear happiness and peace, memory and concentration
Possible Uses: Athlete's foot, chiliblains, colds, corns, dull skin, flu, oily skin, spots, varicose veins, warts.
Aromatic Description: Aroma is similar to fresh lemon rinds except richer and more concentrated.
Emotional: Fear happiness and peace, memory and concentration
Possible Uses: Athlete's foot, chiliblains, colds, corns, dull skin, flu, oily skin, spots, varicose veins, warts.

PINEAPPLE Fragrance Oil

ROSE Essential Oil
Aromatic Description: Strongly floral, sweet.
Emotional: Anger, anxiety, , frigidity, depression grief, menopause, happiness and peace, loneliness, panic and panic attacks and stress.
Possible Uses: Depression, eczema, frigidity, mature skin, menopause, stress.
Aromatic Description: Strongly floral, sweet.
Emotional: Anger, anxiety, , frigidity, depression grief, menopause, happiness and peace, loneliness, panic and panic attacks and stress.
Possible Uses: Depression, eczema, frigidity, mature skin, menopause, stress.

SANDALWOOD Essential Oil
Aromatic Description: Rich, sweet, fragrant yet delicate, woody, floral.
Emotional: Anxiety, depression, exhaustion and burnout, fear, grief, irritability and stress
Possible Uses: Bronchitis, chapped skin, depression, dry skin, laryngitis, leucorrhea, oily skin, scars, sensitive skin, stress, stretch marks.
Aromatic Description: Rich, sweet, fragrant yet delicate, woody, floral.
Emotional: Anxiety, depression, exhaustion and burnout, fear, grief, irritability and stress
Possible Uses: Bronchitis, chapped skin, depression, dry skin, laryngitis, leucorrhea, oily skin, scars, sensitive skin, stress, stretch marks.

STRAWBERRY Fragrance Oil

TEA TREE Essential Oil
Aromatic Description: Tea Tree Oil is medicinal, fresh, woody, earthy, herbaceous.
Emotional: Fatigue, improve concentration and clear the mind, relieves sprains, muscular pain and body aches.
Possible Uses: Acne, athlete's foot, candida, chicken pox, cold sores, colds, corns, cuts, flu, insect bites, itching, migraine, oily skin, ringworm, sinusitis, sores, spots, urethritis, warts, whooping cough.
Aromatic Description: Tea Tree Oil is medicinal, fresh, woody, earthy, herbaceous.
Emotional: Fatigue, improve concentration and clear the mind, relieves sprains, muscular pain and body aches.
Possible Uses: Acne, athlete's foot, candida, chicken pox, cold sores, colds, corns, cuts, flu, insect bites, itching, migraine, oily skin, ringworm, sinusitis, sores, spots, urethritis, warts, whooping cough.

VANILLA Fragrance Oil

YLANG YLANG Essential Oil
Aromatic Description: Fresh, floral, sweet, slightly fruity, fragrant yet delicate.
Emotional: Anger, depression, frigidity, mood swings, PMS, stress
Possible Uses: Anxiety, depression, frigidity, hypertension, palpitations, stress.
Aromatic Description: Fresh, floral, sweet, slightly fruity, fragrant yet delicate.
Emotional: Anger, depression, frigidity, mood swings, PMS, stress
Possible Uses: Anxiety, depression, frigidity, hypertension, palpitations, stress.
References:
https://www.naha.org/explore-aromatherapy/safety/#pregnancy National Association for Holistic Aromatherapy
http://www.healthline.com/health/pregnancy/
https://www.naha.org/explore-aromatherapy/safety/#pregnancy National Association for Holistic Aromatherapy
http://www.healthline.com/health/pregnancy/