Question: how many days does it take from the resting follicle stage to ovulation?
Answer: Antral period: A class 4 (1 to 2 mm) follicle, if selected, requires about 50 days to grow and develop to the preovulatory stage. The dominant follicle of the cycle appears to be selected from a cohort of class five follicles, and it requires about 20 days to develop to the ovulatory stage.