With my first pregnancy I was petrified about labour. I was afraid of the pain and didn't know how I would get through it. I just kept telling myself though that it would be over soon enough and that I would get through it and soon would be looking back on it wondering why I had been scared. Once the contactions started all my fear disappeared and where replaced by excitement that the baby was on it's way and I would finally get to meet him/her. I did NOT want an epidural but after 36 hours of labour pains I was only 2 cm dilated and exhausted and gave in to it with great relief.
With my second pregnancy it was the same. I was scared in those final few weeks of the pain again (DS labour was very long and difficult)to the point where I felt sick with anxiety. Again though once those first few labour pains kicked in the fear disappeared and I got excited that the baby was coming (and my long tough pregnancy was finally at an end). DD came fast and there was no time for any meds. I was screaming my head off but I made it through and now I can't believe that was 5 months ago already.
You will make it through too, just keep in mind the end result, that tiny little baby that's waiting to meet you