can herpes just be one little spot ? tmi‼️

i’m asking cause about two weeks ago my boyfriend had a red spot near the top of his.. yknow- like right below the circumcision line and he said it happens sometimes from friction when we fuck a lot and i looked at it with a flashlight and it looked like a scratch and now my uterus is sort of cramping and last night when we went from the back, when he would go super hard it felt like he was hitting something and it hurt so we switched, but it didn’t hurt when we did missionary and it also didn’t hurt at all the night before last. am i just overthinking? i’m also on nexplanon and don’t get my period so i know it’s not pms cramps but i’ve been sort of achy all over lately including in that area so it still worries me