I don't have any personal experience in this matter. But I do know a friend who was in the exact same position. She was able to take care of it and she is still here without any problems. So, please don't worry about it too much. I am sure someone on sajha will be able to give you advice. I will try contacting my friend to ask how exactly she was able to solve this problem. I will post on sajha if she gets back to me. Hang in there. There always are ways to deal with these things.

May be you could clarify exactly what happened so that people can give you the best advice. Did you drop one class and were left with only 11 credits? You said,"१२ credit नै क्लास register गरेको थे तर  क्लास miss भएर..." but if you miss class wouldn't you get an F rather than the class being dropped from your registration? Also,do you think you could prove that “circumstances beyond your control” resulted in this situation? ( I believe that is the standard for reinstatement)