10 days ago I fell over and landed heavily on my right knee. I have lots of bruising all down that leg but the pain has improved as long as I don't Kneel, that is still very painful. However last night I noticed that my lower leg and ankle are quite swollen, no further pain but feels tight. 4 cm difference in size from my left calf. I do not think it is a DVT as I have no symptoms other than swelling. Do you think I should get it seen?