The pain is concentrated behind my
knee and in my upper thigh. I am terrified its a
DVT, due to the fact that walking makes my leg feel so heavy. No swelling/redness as far as I can tell - but my anxiety about this is making it hard to see for sure. I am 22, healthy weight, non smoker, not on the pill. Would a DVT pain cause such tightness behind the knee, even if it comes and goes?