I have noticed that the first few times I'm with a new person we spend A LOT of time being sexy together. Like hours in a row. This seems normal because we're getting to know each other's bodies and it's super exciting. But if this new-sexy-getting-to-know-each-other-for-hours-night involves hours of different types of vaginal fingering or other penetration it always means my vagina and vulva are sore for the next day or couple of days.
This happens whether or not anything painful happens while being sexual, and regardless of lube usage. It also happens even though I'm regularly sexual with my primary partner and other people. It's also been true ever since I started being sexual with others, about 10 yrs ago. I mostly don't have penial vaginal intercourse with anyone except my partner, so usually there's nothing bigger than a couple of fingers on those nights.
I really like spending hours being sexually intimate with someone, but not if it makes me hurt the next day. Is there something I can do to help relieve the pain? And in the long run should I be doing any type of exercises to help strengthen my pussy?
If using lots of lubrication didn't work then I can only speculate the guy doing the fingering is not aware of how rough he's being. Especially if he's inside your vagina banging away on what we call the G-spot which isn't a spot but rather part of the internal clitoris. It's VERY indirect clit stim. Until you solve the pain problem cut back on vigorous vaginal stimulation until you figure this out.