How Long Does Accutane Last in Your Body?

I have been off accutane for nearly 2 weeks and I still have joint pain,I have pain in my heels,lower back and the worst is in the knees.I used to be able to throw down good dunks,I was in my prime for sports and now it pains me to get out of bed,do lunges or any jumping.When will this go away and what can I do to help my joints recover?I am a College Basketball player, I am active and healthy, after reading many articles and experiences I am feared that my career is over or reach full potential