Dark brown discharge, 3rd week of isibloom birthcontrol

I started my very first birth control 3 weeks ago and my period ended 2 weeks ago.

Since then, I’ve been getting cake-y/ paste-y dark brown vaginal discharge. I don’t want to wear panty liners and it’s such a hinderance everyday because I don’t feel comfortable and I feel all icky down there.

I’ve read a lot of negative reviews about isibloom birth control besides it being really cheap.

Could the dark brown discharge be a side effect of getting used to a birth control (since it’s my first time and all) or the side effect of isibloom itself? Idk if I’ll need to change birth control