Blood?

So my period ended on Sunday, and I've had sex two times after that, but I noticed when we're done and I wipe i see blood. Not super red, more like pink. At first I knew for sure it was the leftover from the period. But today's Friday and I still saw some pink after wiping. Even after hours of having sex, I used the restroom and wiped and saw pink.... Should I be worried or something. I feel like I'm overthinking it. I'm not in any pain or anything.