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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
Fertility Medicine 33 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.

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Last updated Jun 10, 2014

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