Bigdavalad, I'm going to sound a little sarcastic, but I'm not meaning to be like that at all, okay?
The GSD is a guarding dog, so when they feel that they need to deal with a situation, they do often go in hell for leather. What you want to do is make sure that he feels he has a job to do with you - you're taking responsibility for what happens around. Out of interested, was it a black lab?
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Withnail... when we've had to whelp rescue pups, it's always best to let mum get on with it. You want to be there with towels and a pair of scissors.
DO NOT interfere unless you have to. I don't know if you've seen pups whelp before, but it can be quite scary the first time. If you can, have someone experienced with you, and make sure you have the number of an emergency vet handy just in case.
She will have contractions. When a pup comes out, it will be in the sac. She'll break the sac with her teeth, chew off the umbilical cord, clean up the pup and eat the placenta.
Dogs are much better at having pups than humans..
Make sure you get the pups near the teats so they get milk right away. Make sure the pups are breathing okay.
If you're indoors, you won't need a heatlamp.