No, it is not safe to plan a pregnancy while taking Fibroprist (Ulipristal acetate). This medication is strictly contraindicated during pregnancy as it can interfere with the pregnancy and potentially harm the developing fetus. You must discontinue Fibroprist and typically wait at least one complete menstrual cycle before attempting to conceive. Regarding your fibroids (measuring 32mm to 37mm), their impact on pregnancy depends largely on their location (whether they are inside or outside the uterine cavity). Please consult your gynecologist to safely stop the medication, establish a safe conception timeline, and evaluate if the fibroids require any intervention before pregnancy.