Oh man. Whatever you do, IF you get waxed, go somewhere good! I ALWAYS waxed, but then, when I was hugely pregnant with my first, of course, I had not been waxing and couldn't do it. I knew it probably didn't matter, but I wanted to get cleaned up, so I went to a LAME salon (I didnt' know they were lame, they were pricy and SAID they did bikini waxes...). The girl did NOT know how to wax, she didn't even hold the skin while ripping away the wax (hello, if you're squeemish, don't advertise bikini waxes...), so I got huge black bruises all down there. I was sooooooo mad.
Congrats on your pregnancy. For real, no one will care if you have hair, but if you wax: go somewhere good! OR, you may want to just shave. Even if you have a little growth, at least it won't be tons of looong hair. :)