You usually seem to hear horror birth stories.This went wrong,that went wrong,or women in labour for days.As Audrey said the time does pass quickly.
I worried with all of my 7 babies.There are midwives on hand,there are drugs to help with the pain.
Might help to find out as much as you can before hand.It helps to know what's happening.While I wouldn't suggest you do the drug free thing,some of the relaxation and breathing techniques may help you.One of mine was a homebirth which meant no pain relief except gas and air right at the end.
Speak to your midwife.See if you can arrange antenatal classes.A c-section is not the easy option,there are sometimes complications,and recovery is harder and takes longer,and in any case it may not be offered without medical reasons.
Good luck with the rest of your pregnancy,and the birth.It's normal to worry,but in most cases it's not as bad as you think