It has been seven years since I had sex last and I haven't really been masturbating either, but I have recently been trying to get back into it. When I use my fingers my g-spot area continuing to the opening of the vagina is extremely super sensitive, much more so than when I was sexually active seven years ago. I can almost orgasm with gentle stimulation from fingers, but after the orgasm... later on... that area feels bruised. I don't think I am being rough.
I also have been trying dildos and they have the same effect. Using the Vixen Spur (which is small) I can barely stand the intense sensations that are coming from that g-spot to opening area. I had to completely stop and take a break once because the sensations were so powerful they were almost pain (I can only insert it about three inches or so. )
Is there something wrong with my body? less

You should ease yourself back into sexual activity. If it has been a while, your clitoris, labia and vagina may be sensitive because the activities you are doing aren't something you've done in a while. Do what feels good and take it a little slow. If the pain persists after over time you might want to check with your doctor, just to be sure. More than likely you just need to build your stamina up again less