My 4 year old female guinea pig Hazel lives with her husband (neutered) 4 weeks ago went off her food for a couple of days showed no interest in grass and dandelions and didn't want to come out of her hidey house. So we went to the vet for a thorough check up he couldn't find anything other than possibly a very small ovarian cysts. So we came away with emeprid and metacam. 24 hours later totally back to her usual self. Then this afternoon she seems to be doing the same again ate breakfast fine but uninterested in food this afternoon, she almost seemed as though she was looking for something! Moving fine just no interest food. Does anyone have any ideas what may be wrong? Thank you.