Sprained ankle

Ok so I've had a sprained ankle for about 5 hours now.I looked it up and it said that I have a first degree sprained ankle(which means it has mild pain and hardly no swelling).I really want to know how long would my ankle be sprained?cuz I'm on spring break(from school)and I really don't want to go to school with crutches or like a ankle brace.I'm pretty much afraid what the other kids will say.Anyway someone pls answer my question!:D