If you have private insurance, go get an MRI like tomorrow lol.
Or if you have 300-500 bucks, go get one tomorrow, seriously haha.
So here's my take, most knee injuries involving twisting involve multiple areas of the knee so for example an ACL sprain will involve medial meniscus and a collateral ligament most of the time.
Since it's been so long and you're still in pain, It could mean a few things, you keep doing damage to the knee because you're walking or something else that is aggravating it (whatever it may be). There's a chance you might have torn something and it's bone on bone now, but who knows til you see it on MRI.
I would definitely go non-weight bearing, aka get crutches. Start with those quad sets, if it hurts, don't do it!
Wait, do you have a pain at night that keeps you awake? Does it hurt regardless of position?