I have very irregular periods, most of my cycles are 42 days or more. Every now and then (maybe once every 4 months) my period comes “early” around 38-39 days, but on this site it always shows that my expected period is on day 39. More than half the time that is wrong. Which affects when I ovulate and therefore, this site always tells me I am ovulation several days before o actually am. I use this site to keep track of my periods, but I would not recommend this site. Also the questions below make no sense. It’s asking about a delivery and if it arrived on time and if it was broken. Y’all didn’t mail me anything.