The baby is an innocent. She is a wonderful little person already completely devoted to you. Many people don't have feelings of love or attachment to their children until they see them on the outside, so it is OK and normal for you to feel worried or even angry right now. It might help you to have a sonogram to see the joy and life inside you. Her heart's been beating for 2 weeks already, this week she's going through her biggest growth spurt until puberty, and in a few days you'll be able to see her hair.
As you know, it is most likely your boyfriend's child. Go forward assuming that. Have your baby. Do a cheek swab when she's born. In the slim chance she is not his, you can make an adoption plan if you want. You can choose an open, semi-open, or closed adoption, meaning you can have regular contact, pictures and letters, or no contact. You get to choose if you are ready then to parent and how much involvement you want in her life. Your boyfriend might not care about genetics and might be thrilled to love you and her and raise her as his own. A lot can happen in 8 months. You have so many things to worry about and so many different possibilities. Just take today.
Make sure you are on vitamins, start thinking about names (I just discovered the baby name forum here earlier and it is so much fun!), and take it one day at a time. Today you get some rest, tomorrow you go to church or for a walk in the park, Monday you call the doctor for a prenatal vitamin prescription, etc. You'll get there, and if you need help in the process, there are plenty of people I could get you in touch with in the mean time to help.