i have had one with and also without.
1st with an epidural and episiotomy, I felt nothing, during the birth, or after when they where stiching me up.
2nd with nothing but a local anaesthetic in perineum and also had an episiotomy.cant remember the pain of either the episiotomy or the ventous to be honest, just the pain of the contraction (which was hell on earth)
however, after even with a local, i felt the stiches pulling and was very on edge during the entire stiching up process.
Both times a ventouse and episiotomy where nessecery, becase both my babies had late heart decelerations and needed to be out of there.
TBH the second one with NO pain relief, was such agony with the contractions, they cut have cut open my tummy and got it out for all I cared at the time
if I had my time again (and I wont ), I would have an epidural, but my second labour was only an hour, so it was way to late for one.