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Alexandria, VA
A 24-year-old female asked:

Taking 2.5 mg of femara (letrozole) & on cycle day 16 still no follicles. wht's a normal follicle size and when should they appear? whn cn i take the hcg shot?

1 doctor answer1 doctor weighed in
Dr. Seth Derman
Reproductive Endocrinology and Infertility 34 years experience
Around 18, midcycle : A mature follicle is around 18 mm but may not release until about 26 mm. It is normal to have a mature follicle somewhere between days 11 and 14 though it can take longer. Your doc will not instruct you to take the HCG until at least one follicle is mature.
Last updated Jun 10, 2014

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