Blood Spot

Woke up yesterday morning with c pap mask on, nasal pillows in my nose, and there were 2 little spots of blood on pillow case. No blood on mask, or my face, or anywhere else on my body just on pillow. Has anyone experienced this, I'm wondering where the blood came from? Thank you!

duplicate post and the first one was yesterday I think it was.

To OP....impossible to offer any sort of accurate response because we have no other information about your equipment.
Even then it would be difficult because no one here can see what you see.