I had letrozole 10 days in this cycle. I found egg white discharge on 10th day itself and in relation. Now it's my 24th day. Yesterday I checked due to some doubt of the flow. I found a low cervix and a blood spot. I thought I got my period too early on the 23rd day. My usual cycle is 31-32 days. But the bleeding is only that blood spot that didn't get my period even today. What will be the reason?