How long does it take for a sprain to heal?

I jumped off a mat today at tumbling and felt my foot/ankle pop and then it jammed. I knew it wasnt broken and I put ice on it. I tumbled a little more just on the tramp and put more ice on it. I have a parade that i am tumbling in in 10 days will it be healed by then or close? I also compete on the 16th of August will it be healed by then? Thanks