Possible heart stuff, always go to ER. Stuff of low concern like a mild rash that hangs around or mole you want checked out, go to clinic. Broken bones are ER. If you need stitches but don’t think the cut is so crazy big and deep that it severed tendons or anything, urgent care can stitch you up.
When in doubt and you need something done quickly, just go to the ER. At the least you can ask the check in nurse if it’s something urgent care can probably handle and if she says yes, just bail out and head that way. It’s cheaper, and the ER is always filled with people who may need help that UC can’t do.
But you can’t just go off an ekg. You also need blood work done to see if you had an mi that resolved itself, so going to urgent care is useless. Beyond that it’s stupid and dangerous, because if you are having or get an mi there, the facility isn’t equipped to run a code.