Uncomfortable

So me and my boyfriend have a lot of sex, but recently I’ve been feeling an uncomfortable sensation down stairs, it’s been going on the past two days And I’m just so uncomfortable anywhere. I work with kids so I move around a lot so I feel like it’s just making it worse, but it’s itchy.. my vagina is inflamed, does anyone know if it’s just from too much sex of he’s too big or what because I’m starting to freak myself out