Upper left abdominal pain. is this my uc or something else? also just recovered from a sciatica strain if that's a factor.

Tough to say: Without an exam, it is tough to say what the pain is. With a history of uc, that would be high on a "differential diagnosis" as the l upper quadrant may be your upper descending colon being inflamed with your uc. Doubt the sciatic nerve strain has anything to do with the luq pain of your abdomen. If it continues, seek help and get an exam, best wishes.

Maybe UC: But maybe something else. Not sciatica though.

LUQ anatomy: Anatomically, the left upper quadrant (luq) of abdomen includes: spleen, pancreatic tail, stomach, descending duodenum, splenic flexure of the colon, associated vessels. Don't forget the diaphragm, heart, and lower chest are pretty close by. The abdominal musculature, ribs, and skin can all contribute as well to localizing luq pain. Maybe uc, but doubt it's sciatica.

Pinched Nerve: Sounds like you have a pinched nerve in your back or abdominal area. I would suggest seeing a pain/spine specialist to evaluate you further to evaluate what level and what can be done to treat you. There are interventional treatments besides medications and surgeries that might reduce or eliminate the pain altogether.