This app has been so helpful I had my implanon took out sept 19th 2015 and I thought it was going to take for ever to get pregnant with my second child we had baby dance every other day during my fertile week and we made sure we did it on my ovulation day and the day after it only took us two months to conceive I opt out September because that's the month I got my implanon took out I opt out October because we hadn't had my first cycle until October 19th so we didn't know when I was fertile. My last cycle was December 21st 2015 and I am proud to say thanks to GLO I am 8 was 5 days today and my due date is September 26th good luck girls don't give up baby dust to you all