week 3, smooth so far, until random sharp pains around top of kneecap after first PT. Anyone?

49F LTKR, just has first PT after OT ended, went without pain pills. It's clear that they want to press the limits, and would prefer I had pain meds so I/they can capitalize on this crucial time for ROM pressure. After the appointment I was so achy and tried to just use Tylenol, but I just don't have it in me. The weird shooting pain was new to me.