wierd moods

I have suffered from depression for the majority of my life, last year however i managed to overcome it. i have been out of therapy since august last year, and my life has only improved since then. however Since starting the pill in february i have been feeling super super strange, i cant quite put my finger on why or exactly how i feel its just a strange negative feeling. it was easy to ignore at first but during the past few weeks the thoughts in my head havd gotten deafeningly loud and i know its just temporary but its making me freak out. Has this happened to anyone else?