We are trying to conceive naturally for 2 months. Tracking my periods and ovulation day with Flo app for 2 years. 28-35 days my cycle length. This month my cycle date missed 18 jully is my due period according to flo app and 90% period prediction date was correct. But this time my periods start on 22 July with sharp one sided pain particular left abdominal sided area. Blood flow was very heavy with heavy blood clots and last for 7-8 days.plus starting 3 days heavy blood clotting with diahrea, stomach upset, weakness specially in morning all the time in the day i want to sleep