Sperm and egg not developing

Fertility can be treated with drugs to stimulate the normal reproductive cycle, procedures to start a pregnancy or both. The drugs that are used to stimulate fertility have been used for 50 years and remain the basis for fertility drug treatment. See the our fact sheets on ovulation induction and the risk of multiple pregnancy for more information. This is treatment to get pregnant by means other than having sex. This treatment really just replicates what happens during sex. A small amount of sperm is placed inside your cervix when you ovulate.

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The effects of sperm quality on embryo development after intracytoplasmic sperm injection

Blighted Ovum (Anembryonic Pregnancy) - StatPearls - NCBI Bookshelf

Egg freezing, also known as mature oocyte cryopreservation, is a method used to save women's ability to get pregnant in the future. Eggs harvested from your ovaries are frozen unfertilized and stored for later use. A frozen egg can be thawed, combined with sperm in a lab and implanted in your uterus in vitro fertilization. Your doctor can help you understand how egg freezing works, the potential risks and whether this method of fertility preservation is right for you based on your needs and reproductive history. Egg freezing might be an option if you're not ready to become pregnant now but want to try to make sure you can get pregnant later. Unlike with fertilized egg freezing embryo cryopreservation , egg freezing doesn't require sperm because the eggs aren't fertilized before they're frozen.
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Third-party Reproduction: Sperm, Egg, and Embryo Donation and Surrogacy

By Elie Dolgin. But, a few years ago, working in a lab at the University of Michigan, he witnessed something mind-boggling. The cells he was working with seemed to assemble themselves into what looked just like an early-stage human.
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