I know the exact date i conceived as well - we where temp charting, so i have little smily faces in the app. boxs Also, am was working on about 31 - 33day cycle, but, spotted for a few days before each AF. According to the drs, my due date was the 23rd, but, i always had thought it would be the 28th. My obs now says the 30th. But, i still reckon the 28th. The 12week scan said the 28th as well