Slight hyperextended knee?

i hyperextended it about a month ago and it was really painful. now its pretty much better. what concerns me is, although i can run and kick(soccer) fine i still feel slight pain if i stand to straight or if i kick with the outside of my foot. i also have to wear a knee brace whenever i want to play soccer. its pretty hard for me to not play since its summer and i have nothing but soccer to do the whole day.