Hello everybody, let me first say; I'm a new owner. I've never had Guinea pigs before in my life until this past December. As a Christmas present, my aunt took me to her usual pet store for her dogs and we bought a very young pig. My neighbor had a single pig she could no longer take care of and was going to give to me and I had read that pigs belong in pairs. I noticed my little Girl, Belle, was sneezing and kept her separated. I monitored her over three nights before deeming her sick and took her back to the shop for the Vet. It was a URI which she spent almost 3 weeks in the Vets on antibiotics. Long story, but basically my neighbor took her pig back so we purchased another little pig (Riley) from the store after spending a decent amount of time there to make absolutely sure I wasn't buying another sick pig. Both of my girls have been doing good and I've learned quickly how to care for them. Their store bought cage is now in the garage and they live in a C&C cage. They seem happy. About a week or so ago, Belle woke me up in the middle of the night making this strange noise. I've been monitoring her the best I can (I've been in the hospital a few days, I have a hiatal hernia and will be getting surgery this week) but I'm really concerned for her. I recorded this last nightRiley has been completely fine, it's only Belle doing this. She isn't lethargic; she's eating, drinking, pooping and popcorning like usual. It's just this noise. Last night after that recording she lifted herself into a standing position using my arm and let out one loud sneeze then was quiet the rest of the night. She'll even munch on hay and pellets while making the noise so I know she's not in pain. Because of everything going on right now, getting to a vet isn't my number one option, but obviously if that is what it takes to keep her a healthy little girl than that's whats going to happen. I also should add, she only seems to do this at night. Any ideas of what this may be or advice would be appreciated. I love these two girls with all my heart and I really just want them to be okay.