Should I even test??

I'm going to try to make this very clear, since nobody in my family seems to understand my concern.

My last period ended 9/29

I began BC on 9/29

I had unprotected sex with my Boyfriend on 10/1

My fertile window began 10/6

For the passed 3 days (starting 10/7), I have had what I could only describe as a reddish brown discharge.

Today, it was darker and a bit thicker. The more I wiped, I could tell there was actual blood coming from my vagina as if I were spotting. I've been having unprotected sex with my Boyfriend for the passed 5-6 months, before and after my fertile window and have never experienced this. Should I chalk it up to my BC having this effect on me? Or should I test, and when?

I'm not ignorant to how people get pregnant, or early pregnancy symptoms, but I just need advice.

Thanks in advance.