Guinea Pig Is Pregnant

NO BREAD NO MILK! Guinea pigs are vegan

http://www.guinealynx.info/reproduction.html

Junebug posted an excellent site!

just take her to the vet

Also, it's good when mom is nursing to give her bits of bread soaked in milk. And don't forget the veggies and fruits! Guinea pigs thrive on them!

Guinea pig babies are adorable because they are born with all their fur, their eyes are open, they can even eat real food, although they will nurse. You probably won't even know mom has given birth until you spy one of the little ones in the cage. You will need to separate the males if there are any when they get a little older or you will have more babies....don't worry, with guinea pigs it's very easy to tell the difference....

It's a no sweat situation. My daughter had one that had babies and they pretty much take care of themselves during delivery. The babies are quite small and they jump around like pop corn popping and make really cute noises. They will get out of the cage very easily so you might need to take that into consideration. My advice, start lookin for homes for the babies. The grow fast and before you know it you will have more babies when the babies start having babies.

Call around and find a vet that will see guinea pigs BEFORE you need one. A good website is http://www.cavyspirit.com/care.htm
There isn't too much you can do other than educate yourself about guinea pigs as much as possible so it won't happen again in the future and you will recognize a problem.