I'm the master of ankle injuries. I sprain my ankles at least twice a year.

Ibuprofen is good for the swelling. You might want to go ahead and go to the doctor to make sure that nothing is broke. A sprain takes a long time to heal the ligaments. There are 3 grades of sprains. The first is the ligaments are just pulled. The second is a ligament is torn some and the third is a complete tair of the ligament. If you can't put any weight on your ankle then it's more then likely a grade 2 or 3 sprain. You need to wrap the ankle. The compression helps decrease the swelling. Have you found the RICE formual for ankle injuries? I would just go to your regular doc and have them x-ray it first off.

RICE is:

R- rest
I- ice
C- compression
E- elevation

When you elevate your ankle you want to get it high enough you are above your heart. So lay on the couch and get it up on pillows. When using the ice, put the ice on for 20 mins at a time. You need to do this for the first 48 hours. You should be able to put some weight on it in a couple of days. If you can't do that you really need to see the doc.