I have a few questions regarding pain and swelling in my knee due to prior injuries. I previously tore my acl ligament about 10 years ago. I've been dealing with the pain over them years due to low income. For the most part I'm fine besides the yearly sublaxations. Recently I was walking in a conscience store and pain hit my knee out of nowhere. I didn't twist or hyperextend it. But the pain is relatible to dislocating it. Now 3 weeks later, my knee is swelled up, hard to bend, and extremely pai