Tanning beds

Now first off, please spare me the whole "tanning beds are never safe.. skin cancer.. etc etc.." Any idea if occasionally using a tanning bed while pregnant can negatively impact the health of the baby?? Im still early in my pregnancy (15 wks) so belly is still relatively small. Just curious if anyones still tanning or if anybodys doc has given the okay to tan occasionally? I wouldnt do it every day but really miss the tan glow. Havent tanned since i found out and have only seem my ob once so far and forgot to ask her :(