Welcome to the forum! We'd love to see a picture of your pig.
Guinea pig proofing tips:
1) NO WIRES anywhere that she can get to. They'll chew through them.
2) Put an old blanket down to protect your carpet if you have any.
3) Watch to make sure she doesn't gnaw the corners of your furniture, or the baseboards.
4) Be careful that anyone opening the door to your room doesn't squish her behind the door.
5) Unless you want to spend a lot of time on the floor trying to shoo her out from under your bed, block that area off with something she can't move. You can make a pretty big pen by just zip-tying grids together, and that will keep her corralled in one area.