I NEED HELP

ok boom check it so i started birth control on july30th but before i started the pills iknow i would have gotten a cycle Aug 10th no later the 12th (i obviously have more than 1 period tracker app) which has been pretty accurate . i have not gotten a period yet and i haven't finished my first set of BC , next week starts the color ones. i havent been on BC since before i was pregnant and i mean years ago in highschool , should i take a test or wait until i get to the last week of them and see does she come ( btw ... i have been having faded cramps and one huge one that lasted for like 30 mins) please help i take all suggestions answers please