Guinea_Pig---I am sorry that you have started your guinea pig parenting at a time where everything for you right now seems so overwhelming, but unfortunetly sometimes that happens---one of the big reasons we all learn NOT to buy from a petstore. Now though you have five pigs, unsure of their sexes, mom maybe pregnant again, all in a small petstore bought cage. I am hoping that you or your mom has taken the time to contact a vet in your area who can properly sex all of the pigs for you---That is the FIRST step on fixing your HUGE problem.
Lots of people have given you really good advice, but still I can tell you are confused and upset with everything that has fallen onto your lap in such a short time. I highly encourage you to begin to find great homes for the new babies. Many times guinea pigs are hard to find homes for, especially GOOD homes. The pigs are not ready to leave their mom just yet, but by the time you have new families lined up they will be.
The second thing I HIGHLY encourage you to do is look on the front page of this site and learn what
Cavy Cages is and what we stand for. We promote large cages, that are not expensive to make, but benefit the health and well-being of your piggie. Seeing you missed all of that before you signed onto the forum you may want to take the time to go back and check out the design and concept.
The third thing I really think you need to do is read, read, and read some more. Guinea pigs are not a simple pet like petstores make them out to be. If given the proper care and diet they can actually be quite time consuming. The baby pigs need to be eatting alfalfa pellets right now, quality hay needs to be provided 24/7, and fresh veggies feed twice a day. I recommend you read these pages to start with...
Guinea Lynx :: Guinea Pig Care Guide
If you take the time to research and continue to learn, you can turn this whole unfortunate happening into something positive. I really encourage you to make a difference in these animal's lives, they depend on you.