Weird feeling in knee, numb some sorta pain, left side of my right knee, been hurting for 5 days now. dont know what i did. what is wrong?

Don't know: Such vague, non-descript symptoms in the absence of specific injury makes it difficult if not impossible to render an opinion as to what is wrong. If symptoms persist, then a professional, hands on evaluation is appropriate.

Maybe nerve problem: Your description sounds most like saphenous neuritis. Irritation or entrapment of the sensory nerve on the inner part of the knee can cause pain and associated numbness--usually it can be treated without surgery. You should see a specialist and have your knee examined to be sure, as there are many other possible causes, such as pinched nerve root in the lumbar spine, etc. Good luck.