Oh Hope, I can feel your pain. I too get stressed out by things often because I overthink things like a lotttttt. One day I went to pick my son from school and heard one of his classmates say 'I dont wanna play with you' to my son and began overthinking on to the extent that I couldn't sleep the entire night. Living in the moment and focusing your energy on it is the best way to tackle such stress for me. I am glad your daughter's guinea pig doesn't need an operation. :)