What Does Persistent Severe Pain In Knee Post Multiple Knee Surgeries Suggest?

Hello I had 3 surgery done on my left knee my pain is getting worse I have seen so many knee doctor and think my knee is fine I am getti g worse my MD is the only when is helping me know I am having alot of pain in my left knee it feels like a real real bad Charles horse the pain start from my side of my knee and k ow is raising up my thighs I ice it so many times o am on pain killers and still hurt alot what could it be what could I do I am tired of living with this pain I am very in happy