Af 1 day late vvvvvl spotting. read!!

So AF didnt show any apparent signs of coming this month. I had a pos ovulation test and BD one day before, day of, and day after.. and a couple days around. I experienced mild cramps for a couple days on and off until 5 days before af. Strange cramps stopped when she was due? Bfn 1 day before af. I had the yucky feeling in my tummy i get when i get af this morning, but nothing. Flash forward a couple hours later i had a really bad belly ache so i used the bathroom and i had slightly bloody discharge. -sign- "great" put in a tampon, left it for 3 hours while i ran some errands. Went to get on the shower and tampon is bascially dry!! Pictured below. Fogured shed pick up a little as the day goes on so i stick on TP in my undies and go too work. Get to work and upon a couple visits to the restroom , discharge slighty tinted pink. No cramps. No bloating. Whats going on?!