Have you called the doctor's office? What do they say, other than the doctor is out of town. There's got to be someone on call. Doctors don't just leave town without knowing their patients are covered.
Why do you think the ER won't do anything? This has nothing to do with your back or chronic pain condition. This is a problem with the knee, that had surgery 3 months ago (or whatever).
They're not going to treat it with pain medicine -- they're going to find out what's wrong and treat that.
Get some care, pronto.
I agree get care a.s.a.p. I am 6 weeks post op tkr.Pain below knee with swelling ,flex is good but extention still not at 0 degrees,some sleepless nights. Look,you need to go toE.R. period before infection sets up.And anyone wishing to have like motivation talks on progress ,please email me:***@****...,I know it will help keep depression at bay. Be blessed.