I have lots of adhesions from previous surgeries too, and the tiniest bit of intestinal gas can cause lots of pain. Could that maybe be what you are experiencing? When I get it, it usually lasts for a few days and moves to different areas of my abdomen. I use generic Gas-X (simethicone), and it seems to help. There is also a yoga position that can be found at the bottom of this website page that I've found helpful:
I don't know anything about the products or other info on this site, but I do find the yoga part helpful.
Also, you can get home UTI detection kits at Walgreens (probably other drugstores too). I've never used them, so I don't know how well they work. I guess if it is positive you still would have to go to the dr. for treatment, but if it is negative, it might put your mind at ease.
Hope you feel better soon.
Hugs - Austen