Af for me it's usually 7 days, and three weeks from the end of one cycle starts the next. Early July was the last I had until Sept 11 then it only lasted 4 days. I'm currently on CD 40 and still no af. She was supposed to be here 10/15 according to glow. It's been 5 weeks since the end of my last cycle, no spotting, only some light cramps, sore nips for about 3 days, and some bloating. I'm 31 and healthy. Two BFN 🙁