How can I tell if I sprained or fractured my ankle?

sweet_hear_15
i was walking around a football game Friday and I was on my feet for 8 hours yesterday. I came home and my ankle was hurting. I laid on the couch and looked at my ankle. it was like double the size of my other ankle it was that swollen. I iced my ankle last night. I woke up and it was still hurting. I can put a little pressure on my ankle but not much and for not more than about a minute. also I can't turn my foot inward. like I can't bend my ankle to the side like your supposed to be able to. it really hurts and I can't walk on it. please help.
How can I tell if I sprained or fractured my ankle?
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