Throbbing Pain in Vagina

So to start this off, I’ve been masturbating in the same area for a couple years now. Even though the area that I do it in feels good ultimately, it takes a little while for the build up and it gets me frustrated, so I decided last night that I’d switch it up a bit and try in a different spot. Well I did so, and it felt wonderful. It happened in an instant and there was barely any build up to it, it just happened and it felt wonderful. Well skip to a couple hours later (this was during nighttime) I suddenly wake up to the feeling of what feels like the inside of my vagina throbbing. It was a painful throbbing, too. It’d only hurt every time it pulsated. I eventually just got up and used the bathroom, and went back to bed after some time. Well skip to the morning, it’s happening again. And skip to now, almost 2:00 in the afternoon, it’s happening again!

Does anybody have any ideas about what this could be or what it could mean? My period calendar on here says my period isn’t due for another 12 days, and I’ve never had throbbing pains before my period starts. Did I do something wrong touching myself last night? Either way, it’s about time I go to the doctor to get my first pap smear, so I’ll see what a doctor has to say about it, but I thought I’d ask here first. Thank you!