that's realllly gonna hurt, i tore my ACL skiing, but because i have a high pain threshold, i managed to ski on it for 4 days afterwards, and got the plane back with it, theres no NHS in austria ;-)
When my dad had knee surgery it took him a couple months to recover.. and then he hurt it again and had to have another surgery... good luck to ya, I hope it heals fast if u do have to have surgery