Ice, elevation, a light ace bandage, anti-inflammatories (motrin) until the swelling goes down.
Then, alternating heat and ice.
Depending on how many ligaments that you tore (if any) you may be back anywhere from weeks to months. Listen to your body and try to resist the temptation to come back too early.
If you experienced excruciating pain when you put you foot to the floor getting out of bed the next day, you may be out for months.