Overly Emotional

Ive been on the pill for about 2 years. About 2 months ago I had stopped taking it for a month (im away at college and my prescription was to be picked up at my home pharmacy). Those few weeks of being off it were great. I felt like I was in more control of my emotions and quite frankly... just stronger. Now that I'm back on it I find myself getting emotional (crying at little things, little spurts of anger).

Does this happen to anyone else? If not what kind of birth control are you using?