Sprain/torn ankle liagament?

I fell over on Friday and hurt my ankle, it was painfull and swollen, although I could still bear weight on it. Went to A and E and was told I have done something to ligament. Saturday morning woke up in agony, couldnt put any weight on it at all and was in tears, took ibuprofen and rested it for most the day. Sunday could put a little weight on it although supporting most my weight on cruthes. Sunday evening swelling even worse, now foot swollen, am panicking have I done more damage by standing on it. When should i put some weight on it, and when should I try to do some mobility exercises? How long will it be until I can walk unadided and without have a very strange limping walk?