How Long Does It Take To Get Micronor Out Of System?

I started taking micronor in december and had noticed for a week prior to my period I was very emotional. I have stopped taking micronor now and have noticed a huge change in my general moods. Is it possible that this pill was having a greater effect on my emotional state than I originally thought? How long does it normally take for micronor to get out of your system and any side effects to go?