Brown discharge, a few days late

I am on NuvaRing, and I took my ring out on Sunday. It’s now Wednesday and although I haven’t bled yet, I have had some brown discharge and other period symptoms (bloating, headache, emotional mood swings). I never have completely unprotected sex, ever. I typically use a condom on top of using NuvaRing, but sometimes I use the pull out method with nuva ring. Is there any possibility I’m pregnant? I’ve been googling a lot (which only makes it worse) and it said it could sometimes indicate pregnancy. I’d really like some insight if anyone has any! I’m a 19 year old