soap & water, and a tooth brush to get behind the ears
yes, you should bathe your guinea pig once a month.
You have to bathe your guiea pig and use a shading brush
You don't need a guinea pig.
i would say maybe a sink or if they don't have space there, then the bath tub.
What i do to bathe my guinea pig is to get a large bowl, a sink, or the bathtub and put about 5 or 6 inches of water in (maybe even less then that) Then put in one tiny squeeze of guinea pig shampoo just so there is tiny bubbles around the side of the tub you are using.Use a soft cloth or your hands to bathe your guinea pig. Hold your guinea pig to make it feel secure,it won't drown, and it won't run away. Then gently and thoroughly dry off your guinea pig when finished.
Lukewarm. Not too warm, but not cold. ex: Bathing a guinea pig in the same temp as you bathe a dog is too hot.
i think an average guinea pig should 5-15 times a day i can ensure you if they have more they are perfectely fine for an example my guinea pig did about 30 one day but that was because it had a big meal.
You shouldn't bathe a guinea pig anyway unless they are absoloutely disgusting. So it would be even more stressful for a pregnant guinea pig. Unless instructed by a vet or she is really dirty, I would say no.
You should NEVER bathe a guinea pig. They have oil on their skin that helps them be clean, and germ free. If you bathe them, it will wash all of that oil off. At pet stores, you can get a spray bottle that as good smelling liquid in it. It is wonderful for guinea pigs, but is for ferrits.
I need to feed my guinea pig.
No, this can make a guinea pig sick. The best thing to use to bathe a piggy is cat shampoo. It is mild and will not make your pet sick.
You need to talk to a veterinarian to have your guinea pig spayed.