I spotted brown 2 weeks ago, pregnant?

Ree

I had my “period” 2 weeks ago which was Only brown spotting, barely enough to cover a pad. I’m on the pill btw and never missed a pill that month. I had all period symptoms I’d normally have but instead of red heavy flow, it was like old brown discharge. Not a single drop of red blood, only brown stuff.

Could I be pregnant? I took a test 5 days ago and it say negative. But now it’s been 2 weeks since my “period” should I retest or nah