Hi
Am replying as this is a subject close to my heart..
I think it is totally individual tbh. You may sneeze out the baby and barely notice, you may have some stitches.
My story, is that I had vaginal birth 2 yrs ago. Baby was large, approx 11lbs (might or might not be relevant)
Baby was very low for ages before birth and during labour and consequently my pelvic floor was somewhat stretched. After childbirth, that area was car crash, 2nd degree tear and was swollen up like ballon but it soon recovered - took 4 wks at least for stiches to heal properly. Honest but true.
After that things were ok and sensation wise, its exactly the same, if not better as it was very tight before and now its better. Only thing is sometimes the scar from the tear can be irritated during a GOF. Didnt try intercourse until about 5-6mths though as I was scared, but had no need to be.
I look at it now (not regularly I'd like to add!) , looks the same as before really- from what I tell anyway- but it took time to get back to normal.
My pelvic floor is another discussion!!
So, all I'd say, is dont look down as you are fixing on your first maternity pad and panic! Id probably suggest not looking at all for a while :)
All the best. x