We are sorry to hear of your miscarriages and wish you success with your treatment.
In this case, given that your physician cautions against fasting, and the potential dehydrating effects of your medication, you should not
fast.
As you navigate treatment, you may also find it helpful to arrange a free consultation with a Yoetzet Halacha Fertility Counselor, details
here.
This response was updated on 23 May 2021.