Scared out of my mind

I am almost 24 weeks with my first baby. This also wasn’t exactly a planned pregnancy, although my husband and I are very very excited now. Just scared out of my mind for when the time comes to give birth. I don’t like being in pain and I pass out really easily from blood and needles. I am stressing myself out because I’m so scared and I don’t know if I can deliver this baby. Any advice??