My 4 year female guinea pig (Hazel) is acting odd! She lives with her husband (neutered male Walnut) Roughly 4 weeks ago she did the same thing as today. So to start with she went off her food, didn't want to come out of hide house, couldn't tempt her with grass or dandelions. So too her to my vet, she had a through examination only thing he thought he could possibly feel was maybe a tiny ovarian cysts. So we came away with Emeprid and metacam. Literally 24 hours later she was back to her usual self eating, squeaking etc. So this morning she tucked into her cucumber and hay fine. But this afternoon she is not tempted at all by her tea or grass or dandelions. But seems to be looking for something and turning her back on everything. Any ideas?