Are my guinea pigs anti-biotics making her sick?

If your guineapig is not eating or drinking you need to atleast hand feed it through a small syringe. Its pretty simple just put the tip in their mouth and slowly let some water out of the syringe. The anti-biotics could be doing that, or she could have another sickness on top of that. My guinea pig had pnemonia and we thought we could treat it and be done but it turned out she also had a problem with her digestive track.