Bleeding due to masturbation?

For the past few days I’ve been masturbating and noticing that when I cum my cum looks tinted with red, but today when I masturbated and saw my brush handle (what I masturbate with) I saw Red and it didn’t look like cum it looked like the consistency of blood. I’m supposed to start my period next week so maybe it’s that, but I also felt a bit of pain while masturbating.