The first day of the cycle is the day when there is constant bleeding, and not just small spots of blood. There is no universal rule for determining the exact start time of a cycle. Some doctors count the beginning of the cycle from 12 am, others from 5 pm, but most often the first day of the cycle is considered the first day of bleeding that began before noon. Again, the appearance of rare blood spots is not considered, unless it is a constant spotting discharge. Continuous spotting is also considered the first day of the cycle.
Category: QUESTIONS FOR REPRODUCTOLOGIST