std or?? ( tmi )

so my boyfriend was fingering me and it started to hurt and i told him to stop and he did for a while then kept doing it , then it started to burn really bad and i made him stop and i went to the bathroom and my vagina is so red and it burns like hell, i thought it was his fingernails being too long but they weren't and then i said it was because i was dry down there but he said i was wet . idk what's going on and i've washed down there atleast 2 times already.