Embryo freezing poses no risk to resulting pregnancies. Researchers have shown that fewer frozen-thawed embryos are associated with lower preterm birth rates, low birth weight, growth restriction, and perinatal mortality. The main risks associated with embryo cryopreservation are Damage to embryos during the freezing process. Embryos that are not viable for freezing. Failure to get pregnant after embryos are thawed and implanted. Increased rates of medical issues in pregnancy like preeclampsia and placenta accrete spectrum. Multiple births if more than one embryo is implanted