I tried hatching eggs, and the site was being slow, it seems I hatched three eggs, or tried to, but it's not reflecting in my inventory if I did, and there's no creatu in my hatching slots when all eggs were fresh, and fully incubated.

Is there any way the information can be found, I wouldn't want to lose a couple of my hatches just because the site was slow.

maybe you clicked "hatch eggs" more than once and as the site updated you hatched 3 eggs and all failed? even fresh and fully incubated eggs can fail. its a lot of bad luck to fail all 3 hatches though, but it happens.

and you are sure 3 eggs are missing of your hatchery?

Sadly you can loose hatches when a page has a crazy refreshing attack, which might have happened with out you realising 

Okay, thank you!  Clears that up.  Unfortunate, but ah well.