Help (TMI) 😭😳

My vagina burns. The outside and the skin around it kills.... It kills to wipe after I use the restroom and it hurts when anything rubs against it. The lips feel almost crusty. I just got off my period. The inly thing I can think off is my last day I kept a tampon in all day just in case I had spotting..I've only had sex with one guy and we've been together for over two years. The last time I had sex was 3 weeks ago... I have no idea what's going on 😭 any ideas...