sperm
![](https://extendfertlive.wpenginepowered.com/wp-content/uploads/2019/10/ttc-535x300.png)
Defining infertility part 1: Trying to conceive
Conception requires many functions within the body to go perfectly, which is why even people without fertility issues have only about a 25% chance (or less, depending on age!) of pregnancy each month.