Kinda tmi

Mattie
So like between my thigh and pubic hair part space (😂) like where my leg hole of my undies are, it's been really sore. Just getting more and more sore. So I shaved and there is no bump. Actually, it kinda looks like an indention. And it's a darker color. It's SUPER sore but only hurts if I touch it. What do you think this could be? Only had sex with one guy before and we are in a committed relationship. And had gotten checked for everything when I was pregnant. (4months ago) so no STD. And haven't had sex in like forever! Lol anyone else had this? TIA