I didn't have uterine pain while on T. I had nasty pain prior to T--honestly would call it a 10 on my personal 1-10 scale of pain, but I've always been very intolerant of anything that reminded me of those parts, so maybe it seemed worse than it objectively was. I couldn't stand up, think clearly, sleep, and painkillers or heating pads didn't work, at any rate. The pain went away as soon as T suppressed those parts; 1-2 weeks after my first shot was the last time they hijacked my body.
So yeah... that sucks hardcore. What sucks even more is my advise: please, if there is any way you can (I know you said no insurance and no money), get it checked out. Having pain like that cannot indicate good things and it's been six months. Can you consult whatever doctor is administering your T--would they be able to help you with resources?
As for pain management, until the pain started getting out-of-hand for me, Extra Strength Tylenol and a heating pad on my abdomen used to work. But once the pain stopped feeling like stop-and-go cramps and turned into constant, stabbing pain that would last up to 36 hours straight, the heating pad actually made things feel worse.