I asked my doctor today. He said it was fine but to use caution. He told me to wait until I'm out of the first trimester to be extra safe. Only slight danger comes from being overheated and your body temperature rising. You won't "cook" your baby. The UV rays only penetrate the first two layers of skin. No way it touches your baby. He just said to drink ice water when I'm feeling a lil warm and when I feel myself getting too hot, to get out. Yes your skin runs the risk of burning more easily, but it'll build back up over time. No worries. :) good luck!
It wont do baby any harm but due to the change in hormones its not safe for you. You can burn mlre easily leaving you ar a greater risk to cancer. Id still to a bottle tan for the next few months hun x
Ask your doc, but I wouldn't risk it... It's not even that good for us, so better stay on the safe side :)