Should I Take A Pregnancy Test?

Something odd has been going on. My period ended last Saturday, & my boyfriend & I had sex on Sunday. 3 (4 days after period) days later I started bleeding. I thought I was just spotting, but it continued on throughout the night until yesterday in the afternoon. As soon as it stopped, I thought it was clear & it probably wasn’t a big deal. This morning the bleeding started again. It’s not red, but rather light pink. It was only red once the first time I bled on Wednesday but it hasn’t been red since that one time. Is it possible I could be pregnant? Has this happened to anyone? My next period isn’t due for another 2 weeks so I know it’s definitely not that.

I don’t use any birth control aside from condoms.