Yasmin and knee problems

I have PCOD and I have been advised to try Yasmin to try and stop ovulating because I get cysts so bad. I switched from ortho to Yasmin about 2 mnts ago, I am on my second pack and just recently, last week, I was rushed to the E.R. My husband had to literally carry me because I could not walk. At the time I was exercising because I have also put on extreme weight very fast, almost 10 lbs since starting this pill. Well the x-rays on my knees did not show I had anything wrong and I was literally bed bound, I am a medical asst so I know my body well and I have had some medical background to know maybe this pill is causing the knee problems, I researched it and found this site among many others. Thank god you ladies shared so others could come away from this before it was yrs as some of you have suffered. Can anyone tell me how long after you stop taking Yasmin do your problems go away, meaning I guess when I can walk again, I am on Celebrex now because of this dam pill.