Any ideas ?

So I just got off my period on Thursday, March 15th. I NEVER BLEED after I get off my period.

Well on Saturday March 17th, my boyfriend and I had sex early in the morning about 5AM. & I noticed after we had sex that I would see stuff like this, ONLY WHEN I WIPED.

Well Sunday March 18th rolls around, and we have sex again early in the morning about 6AM. & after I got washed up & I seen the exact same thing.

It’s still happening, these pictures were like 10 mins ago. & it’s ONLY WHEN I WIPE.

Does anybody have any ideas to why this could be happening ?