Weird pain in uterus???

Hey I have a question!! I know I could just google this but I wouldn’t even know how to word it. I have really bad pains literally at least 4 days a week in my uterus area? Like I don’t even know if that’s the area but that’s where it feels like it is like it’s not in my lower abdomen Ike my usual are. And it’s not even like a deep stab or Sharp pain like my cramps. This one feels like a muffled pain of someone twisting my uterus or even like a thumping feeling (like a heartbeat but only in my uterus) ugh idk how to explain. I wanted to know what kind of doctor you would recommend going to? Like should I go yo the regular places where they do std testing and ask them about it??? Or go see a regular pediatrician? Or go see a gynecologist? I also don’t have health insurance or a primary doctor