I know people are probably going to be against this, but while i was pregnant I used the jergans natural glow and loreal bronzers. I love to go tanning, and i just hated being white while pregnant, so i also did the mystic tan at planet beach. the chemicals in the tanning formula are all ones that are approved by the fda and found in foods. anyways my pregnancy went well and my now 8.5 month old is happy and healthy. I also went swimming and layed out at the pool while pregnant with her.
I'm now pregnant with my second and i plan on doing the same things, to look a little tanner, as i did while pregnant before.
Just use your own judgement and ask your doctor.