Welcome to the wonderful world of pregnancy!
I myself am a new mommy to be. I don't know what I can tell you about teen pregnancy, but ehealth has a forum for just that and i'm sure you will find a lot more people to chat with. Do you know how far along you are? I am 34 weeks and 3 days. At the beginning of my pregnancy I felt just fine, no morning sickness or anything, just a little tired, tender breasts and things of that sort. After getting into my second trimester the baby was pressing on my siatic (not sure of the spelling) nerve, causing my left leg between my hip and knee to just ache! Finally she moved off that and since then I haven't had any problems with that. You want to be sure to take your prenatal vitamins, and get your iron checked. It's common for young women, especially pregnant women to have low iron, and this will cause you to feel a lot more tired than usual. I've been taking iron supplements for about 3 weeks now and I can tell a huge difference. If you've got any more questions let me know and i'll do my best to answer! Good luck!
-hopeful