My guinea pig has been acting differently since Sunday. She is usually very curious and explores quite often. But lately she just sits in her hiding spot. She used to squeak when she hears my door creak open hoping for veggies but she doesn’t seem interested anymore and won’t even leave her hiding spot when I come in. She only only comes out to eat and drink. She also suddenly seems much more scared of me than before. I wanted to take her to the vet but my parents don’t think it’s a big deal. I’m worried.