With my last two pregnancies, my doctor has told me im fine to go in hot tubs, as long as I dont stay in too long. I'm now seeing another doctor for my third, as I moved. He has just toldme im not allowed to go in hot tubs, never, not even for 5 minutes. . Why would he say this, but my other docs have told me its fine??? What are the risks if I were to go in for 5 min. Well, I have your answer right here. My personal decision was not to go in hot tubs during my first trhymester. Once I was past that, I would go in lots (SOO relaxing), but I set the temp to no more then 100 and monitored myself carefully for when I felt I was overheating. Your new doctor is probably just not taking any chances, because there's lots of dumb women out there who would go in a very hot tub and not take the precautions. He wouldn't want his tail on the line if something should go wrong. The risk is highest during a) your first trhymester and b) if the hot tub actually raises your body temperature. Alot of doctors feel that hot tubs are fine because we women naturally feel uncomfortable when our temps get too high and get out of the tub. I wouldn't worry about it. Like I said, I followed the 'rules' I set for myself for the two pregnancies we had a hot tub and all was perfectly fine. I SO loved going it it during labour too—very helpful..