Have you seen a doctor?
Definitely keep doing the upper body workouts. Don't overdo the upper body though (pay attention to getting enough recovery time...at least 48 hours for each bodypart) because you want to keep working out.
If you can ride a bike or something without the ankle hurting I think it's okay to do. I would definitely avoid impact exercises (running, etc) for awhile. Anything else like the elliptical will just have to be done according to how you feel. If something hurts, don't do it. Don't push through the pain because that ankle will just take LONGER to heal and you'll be kicking yourself when you are still hurting 6 months from now I'm not a doctor, by the way, but I've had lots of sprained ankled in my life. I usually push through the pain and it hurts WAY longer than it should. That's not smart.