Ankle tissue injury. Or a therapy?

Earlier this year, in February I rolled my left ankle while playing football. Initially it looked a normal sprain but the pain and swelling was too much and remained same for 2 days. I got an x-ray done and consulted an orthopedic doctor. He said there's a damage to the 'soft tissues or ligaments' around ankle. The leg was put in plaster for first three weeks and i've been using Tynor ankle binder ever since removing the plaster. doc had said it'll take total of 45-50 days to be able to ease back into sports activities. but In fact it took me over 60 days to even walk without crutches. I slowly resumed playing football after nearly 4 months of proper rest since the injury. Today its been over 5 months and i still experience occasional pain and discomfort in the ankle. How sever was my injury and what should i do about it now? Do i need any special exercises or a therapy?