Sick Help! drinking LOTS of water, burying her food, and digging

[ziva1697]

hello, I have a guinea pig whose about 5 years old. lately she's been drink a LOT more water, burying her food, and digging in her cage. I did recently change her hay but will be going back to the old one. I wondering if there's any reason for her changes?

 

[bpatters]

Is she really drinking, or is she just playing with the water bottle?

And is she burying her food with her paws, or just dropping it out of her mouth.

What kind of hay were you using? And what are you using now?