Conception pill, please help.

I have been on the microgynon pill for 4 months now, i started getting really upset about the smallest things i wouldn't normally get upset about also started feeling guilty about the smallest things, it started half way through the 3rd month. my friend reminded me of something what happened when i was a child and because i was feeling so down it started it off again. I feel quite down most of the time but then i feel better again, when i first started crying a lot and dwelling on things i went to the nurse because i was getting strange belly aches and i didn't eat much for a few days. and i told her that i was crying over the smallest things but not about the dwelling and she said ' it was my age, my daughter went through the same thing and your age but wasn't on the pill ' and im 16. i just feel overly sentative about everything and i don't know why, is it because my hormones are all over the place? hopefully someone else has gone through the same thing. thank you. xx