At the very least, you need to go home and visit your family for awhile. Don't jump into moving just yet; just go home for a few weeks, spend time with family and friends, and then go from there.
You also have to ask yourself an honest question: If you hadn't gotten pregnant, would you still be with your boyfriend? Would you want to marry him right now? If you can honestly say that no, you wouldn't be marrying him right now if you didn't have a baby, then maybe it is time to move on. Staying together solely for the baby's sake just prolongs the inevitable, and if you are already having problems right now, they might just get worse later on. Now, if you do love him and believe he loves you, and you've talked to him and you are both committed to your relationship, then you can try your best to make it work. Maybe some counseling for him to work on his trust issues, couples' counseling, lots of communication, etc. Definitely start with a long visit to see your family, do some soul-searching, and see how you feel after a few weeks. Good luck; I know it's not easy, especially with a new baby. I hope it all works out for the best. And remember, treasure your time with your little one, because it really does go by way too fast!