Continue. No need to cancel . As with letrozole only one dominant follicle develops . And as ur age is more than 30 - I suggest plz don't delay ur pregnancy . One failed iui doesn't mean it's not useful for u. As iui success is usually 10-15 % - that means one patient concieves out of 10 treated pts.
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Health Tips
u can walkin for free consultation with me in Parency ivf hospital , Bangalore . 9-2