Swollen Knee From Driving Strange Knee Pain In Left Leg When Driving?

Strange knee pain in left leg when driving? - swollen knee from driving

I've never had problems with my knee and was carried out for 4 years. But lately, when I press the clutch pedal on my knee feels like the click lock / and is very painful. So, sometimes I feel that my knee is loose, this is very rare! Since it began, felt like my knee is hurting a little, BT does not hurt to run or even walk the floor, it's just driving! Any idea what is it? It does not appear swollen or anything and I'm only 24! Thank you!