Sadly I've just lost my guinea pig Cali and now her sister seems to be squeaking every once and a while when she pees. I might be being paranoid, but I'm worried she may have bladder stones or sludge. After what just happened with her sister I'm so scared that somethings wrong with Lottie, I feel like I can't handle any of this right now. I'm monitoring her behaviour and weight to see if I really need to take her into the vet (not my favorite place right now after spending countless hours there and paying exorbitant amounts of fees for her Cali). In the mean time I was thinking of reducing the calcium and grain in her diet just as a precaution and was hoping for some suggestions. I've seen some talk about selective naturals grain free (grain free and low calcium) as well as KMS Hayloft (low calcium and good quality). Currently she's on a little less than 1/8 a cup of oxbow essentials adult guinea pig food, which has pretty good overall stats but I was thinking of mixing in a second pellet. She loves her Timothy hay but I'm thinking of introducing some orchard as well to entice her to eat more hay over pellets. I've also heard some mixed talk about oxbow urinary tract support tablets. What are your thoughts?