So Af on 8/19, lasted a total of 36 hrs (which is about half my usual). According to Glow, my fertile window should have started today 8/30 but I had a gut feeling that things were starting to happen earlier than that and I got a positive opk on the 26 and 28. Yesterday and today I have had all the signs of ovulation (cramps, bloating, tired, loss of appetite, crazy high sex drive and my favorite.... Crying for absolutely no reason plus I've felt like I was running a fever all day long yesterday) but now my opks are all very light. So is this normal for such early ovulation? What is the earliest CD that you have ovulated?