) although not harmful to your baby, tanning is still harmful to you, so be aware of the risks associated with cancer.
2) particularly if you have dark hair or are prone to cholasma, if you get the "mask of pregnancy" (cholasma - the darkening of skin around the eyes, cheeks, nose that can make you look somewhat like a racoon) during pregnancy, tanning will make this condition darker.
3) some tanning salon owners will not allow you to tan while pregnant or may ask you to provide a "doctor's note" to do so.
4) because tanning beds are relatively new, there have not been any studies done on the effects of uva during pregnancy, so all information/advice is theoretical in nature.
Also:
is indoor tanning the same as tanning in the sun?
Yes. A photon of uv light is the same whether it comes from the sun or from a uv lamp. When tanning indoors, your body produces a tan in the same manner as when you tan outdoors. An important advantage of tanning indoors is that the amount of uv light you receive is regulated, and there is greater control of exposure. You can gradually increase your exposure times to get a tan, while helping to minimize sunburn. [back to top]
is it alright to sunbathe outside immediately before or after I go tanning?
No. Going tanning before or after sunbathing outside can lead to overexposure and possible damage to your skin. If you have spent considerable time in the sun, chances are that you have received significant uv exposure. Jumping in a tanning bed after a day at the beach will not make you tan quicker, it will only increase the chances of a burn, and the likelihood of damaging you skin. [back to top]
do I have to wear eye protection when tanning indoors?
Yes. Your eyelids do not provide adequate protection from uv light. Although there may be no immediate symptoms, damage may be occurring to your eyes which can lead to vision problems. Always wear eye protection when tanning--you only get one pair of eyes. Strict federal laws require that protection be worn by every indoor tanner. It's a must that each indoor tanner wear protective eyewear that meets the minimum fda standard. [back to top]
can I tan while I am pregnant?
No. Probably not for the reason you think, either. It does not have to do with the "tanning" part of the experience, as in the uv rays, but rather the heat produced by the tanning unit. Excess heat can be harmful to the pregnancy and can cause complications. You should not tan while you are pregnant. [back to top]
p.S girls, while looking up "tanning while pregnant" beware of the some of the sites that pop up. They are porn and really nasty!