Hot tubs and saunas can raise the core temperature of a pregnant woman's body and could potentially harm the fetus. Warm baths, however, are fine if the water is kept at body temperature. Medications Many drugs are appropriate for use in pregnancy, if really needed. If possible, she should avoid taking drugs in the first trimester or taking more than one medication at a time. She can also ask for the lowest dose possible to treat her condition.
Some medications have a long history of being used in pregnancy without problems.
A pregnant woman shouldn't be deprived of drug therapy she really needs, says Sandra Kweder, M.D., the co-chair of FDA's task force on pregnancy labeling. She adds that women with pre-existing medical conditions such as epilepsy, lupus, asthma, or high blood pressure shouldn't quit their drugs because of pregnancy. Safer drugs can be used if necessary, but those medical conditions still need to be treated. They'll take it every other day, or half as much. That's not wise.