Birth control side effects?

Been on Minastrin 24 Fe starting my fourth month. First month normal no symptoms got period. Second month normal but skipped a pill and never got period. Third month super nauseas and cramping and spotting a week before period but got my period (red red blood and a lot heavier than spotting). Starting fourth month and still having moments of nausea and breasts enlarging and bloating. Is this side effects of the pill?