Pain and uncomfortableness around my /upper thigh area?

This sounds gross-ish but before when I was dancing I kept getting pains and uncomfortable feelings around my and in my area and around the very upper parts of my legs. No I havent had wild , in fact I haven't had any at all, still a virgin people! So I don't think it would be that, I just finished my period, I havent been doing any strenuous exercise lately so what do you think it is causing my pain/discomfort?