Taekwondo and medical issue - Bruise to shin in result of ankle pain?

[johnohpro]

It was the last Friday of the term at school and i had taekwondo training in which i was sparring with a blue belt. (i'm only green) Anyway, i tried to kick him in the chest but instead he lifted his knee and i kicked his knee really hard. IT WAS PAINFUL. I immediately dropped to the ground i rested for at lease 10-15min before continuing, then i continued sparring again. The next day, the bruises became more apparent, but my ankle was extremely sore, i couldn't really even move it. Several days have pasted and it has kind of recovered, but rotation still hurts. I have tournament coming up in two weeks and i can't train at all if i can't rotate my ankle properly. Anyone else had the trouble of a hit to the shin resulting in ankle pain? And who has a good way to recover from this quickly? What type of medication works best? Please answer, I'm desperate to recover and start training again.