please help what is this??

me and my boyfriend had sex earlier and than later tonight he began fingering me (rougher than usual) and when he left i look and saw this on my blanket. i'm freaking out!! my period isn't due for another week!! what is this?? :( it's like a lighter pink when i wipe so idk if it's my period or what. I googled this and it's saying a STI???

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors