Citrus oils such as tangerine, neroli, grapefruit, lemon, mandarin, and sweet orange;
German or Roman
camomile; common lavender; frankincense; black pepper; peppermint; ylang ylang; eucalyptus; bergamot; cypress; tea tree oil (don't use during labor or if you have sensitive skin); geranium; spearmint; cardamom; ginger; patchouli; petitgrain; rosewood; sandalwood; benzoin; sweet marjoram; and rose otto are all considered safe to use during pregnancy.