Early period but on the pill

Daniela

Sooo i am 20 & I’ve been on the pill since July of 2018 because of my pcos. I have been taking my pill as directed (my periods have been consistent since being on the pill) and I should start my period in the middle of next week. The past three days I have been having tinted discharge like I usually do before I get my period. Has anybody had an early period while on the pill?? I am sexually active, could I be pregnant? Please help! Thanks, ladies💖