Surprisingly, there aren't too many pictures of pregnant women with tattoos on their stomachs with before and after. Maybe women just aren't getting them done! Anyway,
About.com has a few pictures of tattoos and piercings for you to see what can happen.
This site also has a couple more pictures of tattoos. Just as a warning, one of the ladies has a tattoo on her stomach and she is in her underwear, but it is a decent picture.
I'm so glad I found
this. It documents one woman's pregnancy and how her tattoo survived.