Glow says AF should start 12/14/14 (tomorrow). I'm currently 18 dpo, CD 31. I started spotting very very light pink yesterday 12/12/14. Today, I'm spotting very bright red. Mild cramping on & off on right side of lower abdomen. Has anybody spotted like this before AF & still ended up with a BFP? Usually, after I wipe, the toilet paper is filled with blood. What do you guys think?