Brown discharge

I finished my last period over a week ago and a few days after it ended I started getting sticky brown discharge. I googled it and it said it could be due to my birth control? I’ve been on the pill for a few years and this has never happened. I haven’t had sex in over a month and we used a condom on top of my birth control? I’ve been having this discharge for a few days now. Anyone have a clue why this is?