Knee pain and joint swelling

I hear that these are some of the main symptoms of Lyme, yet the least amount of joint pain I get is my knees and I have no joint swelling. What Gives?

I get really bad knee pain but I've never noticed any obvious swelling, and I'm slender so it would be obvious. Both my knees hurt but my right is generally worse. Also wgej I walk up the stairs they both click so loud with every step that it's audible to anyone around. My PCP said I couldn't possibly have lyme because I didn't have "one red swollen joint", she is a moron. I have positive western blots through labcorps and a cd positive even through the local hospital lab! She said they were false positives because ididnt remember being bitten by a tick and I'd had symptoms for too long for it to possibly be lyme.