A warm bath is fine during pregnancy, but the water should not be too hot. Ideally, the water should be no more than 98-99 degrees Fahrenheit, and limit your bath time to 10 minutes. The American College of Obstetricians and Gynecologists say that bathwater should never be hot enough to raise your body temperature above 102.2 degrees F. Some other experts say the threshold should be lower, around 101 degrees. Submerging your body in hot water, especially during the first trimester, may pose several health complications to you and your unborn baby. It’s not a risk to take. Pay attention to your body when taking a bath. If you notice your skin turning red or feel sweaty, it means that you are too hot. Overheating is dangerous when pregnant.