Belly weirdness

I have what I'm calling belly weirdness. My belly keeps expanding, and it's a tad uncomfortable. Strange little pain zingers that start and stop within a second, but not all over my lower abdomen - just a poke here and a zing there and it's just WEIRD! And expansion. Like super heavy bloating. Yuck. I don't like it - and I am just looking fatter not pregnant. I'm having a real hard time with that. I think some of actually is bloating or so the books tell me - my intenstines sticking out further than they normally would be. What is a good web resource for the anatomy of pregnancy? like, i get where the baby/growing placenta is, but where does all the rest of the internal stuff go? Just pushed to the side and out of the way - what? I've only seen some hand drawings of just where the baby is sitting. Thx for your help.