Hi guys

wasnt to sure were to put this topic but heres my problem... Im 18 and I have a 125cc motobike and I came of my bike recently and my knee went into into the ground causing a grazed knee which rather hurt and then the bike landing on me ankle...But the ambulance took me to hospital they only x-rayed my ankle and said there was nothing wrong with but they didnt even xray my knee and they both r still hurting ..Its been over a month now.... But my knee mainly hurts its an ache sort of pain...When ive got my knee bent its burns and ache's n e reasons?

Thank you