I have had more sprains than I care to count- nothing doctors tell you than to rest it and take it easy - even after 2-5 weeks it can still be painful.
I hurt my side about 7 years ago and still have the pain - my doctor told me once you injure anything the pain can linger for years. So I wouldn't worry too much about it - it will take time. If it was excruciating you would automatically be hoofing it down to the docs.