Ok have swelling on the left side, and in my knee and ankle its followed by pain. should i gate this checked and what could it be?

Swelling: Pain and swelling is the bodies way of telling you something is wrong. In this case consult an orthopedic surgeon.

Chronic or acute.: Pain in two joints, on the same side, may be due to overuse or bio mechanical problems. If this is acute and you can account for it ( increase in exercise, falling, sprain, etc..) i would see a doctor only if it is not improving with time or if you see redness and swelling.