Egg freezing is an option for maintaining your current fertility. It's a viable alternative if you suffer from Cancer and Fertility Preservation that requires treatment or radiation (both of which can impact fertility of your) as well as if require an operation on your ovaries or if you suffer from an illness that could affect your fertility in the same way.
https://drmazenivf.com/do-you-need-to-freeze-your-eggs-and-when/