I'm so confused . My cycles are regular and usually 30 days. AF in April was from the 25th to the 30th.  My glow calendar showed AF to be due on May 25 but suddenly changed it to the 23rd. My ovulation dates were also changed so it seems as tho I was BDing a week late. It would really suck if I'm out this month because I BD on the wrong dates 😩😩.  I'm wondering why it was changed. Please help!