OP, you should NEVER ever put diapers in with any other laundry, and for that matter? Same with underwear too.
That machine does NOT get out all of the fecal matter for one thing...and it is getting in your washcloths, towels and other clothing too.
As well as if white cotton should be bleaching lightly to boot.
But underwear should be washed in small loads, not ever with any type of toweling, or clothing...invites some nasty germs into your closet/drawers and onto your dishes as well.
I did cloth diapers with 4, and the old fold as you used kind, some pre-folded, and the plastic pants too. Those need to be line dried only.
But nix the diapers in with everything else when you wash them.
Horses make me a better person.