Is it the pill?

Hey girls so I have been on the pill for about 6 mos or more. Lately i been very emotional. Like way out of wack, I want to cry, im angry, Im happy, or horny all in less than an hour. This has never happened before at all. I'm not sexually active at all but could it be the pill barely giving me side effects? I ended my period Monday so it can't be that?