Brown discharge ??

My period ended 2 weeks ago and is not due to start for another 13 days. I have normal discharge amount, it’s just tinged a little brown, and I’ve had it for a few days with no other symptoms that would make me believe it’s an infection. I originally thought it was just from trying a new position the night before but since I’ve had it for a couple days, I’m not sure that’s it. I’m also on birth control, taking it regularly, same time everyday, the whole nine.

Has anyone else had this happen, is it concerning?