Ovulation bleeding??

Arianna • Mommy of 3

So im on cycle day 18. Ive been trying to use opks but they're blue dye and pretty hard to read. The darkest lines i got were cycle day 13. But it was still lighter than the control line.. And the past two days I've had ewcm streaked with bright red blood. Baby danced cycle day 12,13,14 &16. Cd 16 i also had pretty intense cramps for like 45mins. Then nothing. I'm so confused