No. Fertility is not affected by having undergone an ovarian stimulation cycle for egg vitrification. When they maintain good fertility conditions, ovaries have enough ovarian reserve.

Yes, you can. In cases like this, sperm has to be tested prior to embryos in case the male is affected by/the carrier of the disease, or oocytes in case it is the female that is affected by/the carrier of the disease. These cases are more complex, but PGD can be safely performed by means of this technique.