Why does my mcl still hurt alot when kicking the ball after 4 months?

i tore the upper part of my mcl 4 months ago, i have no probs running twisting and turning anything but kicking. the pain goes away 5-10 secs after i kick{during practise} but it happens every time, should i keep doing what i'm doing until my knee builds and stick the pain up or should it be pain free altogether before i do anything else