@whisky2014 it would be a little strange to not worry about it, it's all such a huge, huge unknown. It all sounds a bit airy fairy but your body IS made to do this.
People love sharing the difficult birth stories (I get why, it's a big thing to go through) but for every tricky delivery there must be loads that are just completely non eventful!
The oxytocin drip is notorious for making contractions a bit harder, lots of people recommend getting an epidural before it starts. Personally, I didn't notice any difference at all.
For what it's worth, I had an episiotomy with no anaesthetic (and just gas and air) and didn't even notice. Bit stingy for a few days afterwards but no major issues at all. Wouldn't even know now.
And the speculum is bloody sore! But so much happens to your body during labour to prepare for the pushing so it's not like suddenly having a speculum shoved up there. And you can have all the drugs if you like!
Oh, and I bled a lot in my first pregnancy so mine was completely unused! Practically sealed over.
I read a few chapters of Marie Mongans Hypnobirthing book, which went into theories like Fear=Tension=Pain. It really reassured me and stopped me being completely terrified (which I was!). Would be happy to send it to you if you thought it could help.