can you be any more specific than "fell down really hard?" if you just fell down it's probably just a bruise. maybe a bone bruise if you fell hard enough. you don't tear ligaments or do serious damage just from falling over
I never understand threads like this. What the fuck are you expecting us to tell you or do? No matter what we say, you're still going to have to see a doctor and get imaging if it doesn't get better. You're not going to die, so just rest and ice it until you can get to a doctor and stop making stupid threads.
go to a fucking doctor. i had the same injury last season, walked it off, thought i was fine. early season this year, sprain my knee, finally go to a doctor, and then find out my ACL is most likely torn. I'm still waiting on an MRI. can't ski this season now.