Vaginal flutters, help!

Hi ladies,

So today I started having almost a tickle sensation in what feels like my vagina but not quite towards my abs or ovaries. It’s hard to explain. My period ended last Wednesday/thursdayish and I had sex that Saturday. It is now Tuesday and I don’t think I’m supposed to ovulate for a couple days- but last week was my second period since I took plan b. Has this happened to anyone? I recall having this feeling before but I read online that it could be ovulation, but it could also be a symptom of implantation or pregnancy. Does anyone else get these or am I overreacting?