just need to know everything y’all know!!

hey ladies so i went to the obgyn today with my mom bc of my heavy periods. I just started the pill today and i was wondering how long it’s going to take to regulate and will i still have my period bc i am supposed to start it today and i just started the pill today. but my period hasn’t come yet today. will it tm? and how long do they normally last? and how heavy is ur flow? thanks😘💚