No masturbation as a female will not affect the conception and your ability to get pregnant.
You as a female may masturbate as a female as much and often as you want to even when you're trying to get pregnant and it will not prevent you from getting pregnant since to become pregnant the woman has to have sperm come into contact with the egg.
When you masturbate you do not lose your eggs so there's no worry about not being able to get pregnant when you masturbate.
The same is true for a male and he can masturbate as well and ejaculate sperm and still be able to get the woman pregnant.
So if the male and female partners feel like masturbating during the time they are having sex and trying to make a baby then they both can safely do so without fear of losing the ability to make a baby.