When I had DC1, I tore, and had stitches. It was quite a bad tear.
When I was having DC2, I was absolutely petrified and couldn't think of much else throughout the whole pregnancy.
I was so scared of giving birth, I would rather have been given a GA or preferably teleportation. Unfortunately, they hadn't devised teleportation by the time I went into labour.
I was in labour with DC2 for 48 minutes, and I ended up with a graze...and boy that hurt more. Honestly, I didn't feel the tear as it happened, as I didn't feel the graze as I was giving birth, but as soon as I could sit up, straight after the birth, the graze was way worse than the tear ever was.
It stung to wee, even in the bath and my fanjo stung at the slightest touch for such a long time (think wiping after wee).
If I had the choice between a stitched up tear and a graze that is left to heal on its own, I'd opt for the tear. I know this sounds weird, but the graze was not nice at all. Abit like the difference between a cut on your hand and your whole palm being grazed then touching things. Ouccchhhh!! My graze was not a big one, but it stung like a bitch stingy thing for a couple of weeks at least.
I feel for you being so scared, I know how that feels, it's all consuming. I had people saying 'I bet you can't wait to meet your baby.' Err No, she's fine in my tummy for a bit longer...maybe a few months longer??
I was so scared that I wasn't excited about meeting DD, I just couldn't think past the birth, then it started, was manageable and when it got painful (the contractions) it was only painful for 30 minutes and then DD was born.
I'd built it up in my mind so much that it was a fear of something that went rather well in the end.
Try, although I know it's hard, to stay positive and the only thing that helped me was pushing thoughts of the birth out of my mind, not thinking about it. I didn't keep an eye on how close to due date I was, I just thought of other things.
As it turned out, I didn't realise I was actually in labour until labour became painful and then it was only 30 mins left to go, bit by bit.
I don't think I'd have chosen a CS tbh, but it's obviously up to you.