Period and thoughts on birthcontrol

My period is becoming so irregular all of a sudden. Last cycle my period was 5 days late and this cycle i am now two days late. And sometimes my period comes as early as a week! I am getting all of my normal symptoms of my period. Would birth control help with this? Help to level out my hormones and such? Please be nice and help a girl out! ( yes i have had sex but it was protected sex and it was only one time on accident my ovulation period 4 days before ovulation then no more for the rest of the time.)