What disease is this? HELPPP

Sorry for the gross picture.

But I have been spotting since 4th may ( CD 14) But not as much as the picture below (today)

I had unprotected sex on CD 7 and CD 21 (very faint line opk).

Where glow predicted my ovulation on CD 19 since i have 32-35 cycle days.

Today is CD 26. It’s been 13 days.

Am I pregnant from my last sex on CD 21? (Implantation blood?)

(But i’m sure There’s no way i could be pregnant coz the opk is very faint so i believe on CD 21 i have finished ovulated)

Or, do i have some serous vaginal disease ?

It’s not smelly. Just like old blood.