How about joining a prenatal exercise class? Or, go to some community education classes if your hospital offers them. You'll need a support system even more when baby arrives.
Friends tend to vanish not to long after ur pregnant. Especially if you are hanging out with more of a party crowd. You probably won't hear from them for a long time. I'm on my second and my bf is a total jerk. He doesn't even try to understand what I'm going through and we argue constantly. At this very moment I'm shut up in my bedroom watching tv and he's doing who knows what somewhere else in the house. He won't check in on me to see if everything is ok, he'll just come in the room around 3am and then act like nothing happend when we rolls out of bed sometime in the afternoon tomorrow. Hang in there, I hope you feel better soon. It does get lonely sometimes.