I am very early in my pregnancy (6 weeks). Is it ok to continue to use a hot tub? I don't keep my hot tub very hot - it's more like a warm bath.
Raising the core body temperature in a developing fetus could THEORETICALLY lead to developmental abnormalities, but this has only been seen in animal experiments and never reproduced in humans. So if you've been doing it, that's reassurance that you probably haven't done any harm; but you should discontinue it since you can't do any harm NOT using the hot tub.