Does Delaying Menstruation Cause Mood Swings?

I started yesterday taking Lutenyl to postpone my period for a week. I just noticed that I am constantly in a bad mood and can't see past my nose ! My 2 children are sick with chickenpox one of them the spots are almost gone and have started all over again. Then my other daughter has her holy communion next weeked and I have exams at university and no family support whatsoever. I feel I am on the verge of a massive breakdown can this be linked to delaying my menstruation ?