Thigh and knee pain and swelling after massage?

[Vince J]

Thigh pain, knee pain and swelling, after massage?
3 Months ago i was sitting in the back of my friends truck, massaging my thigh in one spot. After a few minutes I stopped, and when I did, it felt like the muscle deflated. So i slid off my friends truck and walked around for a minute, then had him take me home cuz it didnt feel right. By the time i got to my house my leg was in pain. went to the ER, got xrays, went to a doctor, got xrays, went to an orthopedic, got more xrays and an MRI of my knee. it showed some swelling, and some fluid underneath my patellar tendon. NOOONE has any idea what the problem is, I havent been able to walk for 3 months, bar one day i said forget it, and walked for a day, which put me right back to square one. When I stand, the middle of my thigh down to the knee gets kinda blotchy with light red, from the knee to the ankle gets red, and from the ankle down gets red, then slowly darker and bluish. Any Ideas on what this could be? and what the color changes mean? Is it blood getting pinched off by my thigh? or is it poor circulation resulting in the blood sticking around in the extremities? Knee is still swollen, and patellar tendon is still tender to the touch. any ideas?
Additional Details
I forgot to mention that if I move it around or dont let it rest, or leave my knee bent or anything, i get spasms, mostly in my thigh, but around my knee and in my calf as well. and if its relevant, smoking cannabis makes it feel weird, kinda numbish and it feels like my muscles are pulling more throughout my leg.