9dpo or 13dpo? I dunno!

Kind of long:

According to glow I'm due to start my period tomorrow, and I'll be 14dpo. However I've completed two rounds of clomid, and my first round I had a positive opk on CD14. The second round I didn't test because I was trying to eliminate any stress. So if I go off of first cycle and figure I ovulated CD15 (or near there) I'd actually only be 9dpo today (instead of 13 dpo which glow is telling me.)

I checked my CM and CP today and had a hint of blood! Ahhh I'm so confused now. Is it IB or the start of AF?

I should have just tested when I thought I was near ovulating. I guess if AF shows she shows. If not I'll test.