Hi, first I would like to start of by saying I will be calling my little guy Oreos vet first thing tomorrow and getting him an appointment right away. Oreo is approximately 2 years old. I am not sure of his exact age because he was originally a classroom pet where my boyfriend teaches and we decided to bring him home. He went from living in a small store bought cage to now having a nice C&C cage I built him about 4-5 months ago. He is a happy guy who loves to eat. I like his house with a layer of puppy pads and then care fresh bedding on top of that and I clean his cage every few days. Today I had him out in a blocked off area with some pads down and his hay wheel and pigloo while doing the cage change and I noticed what looks to be wet bloody spots. They are small in size about the size of a quarter. I am a novice pig owner and am often on google to learn things I may not know on how to best care for oreo so I am thinking from what I have googled he may have a UTI. I noticed where he had been laying in the loft part of his cage seemed much more soiled the normal and he had been laying in that (not good). So I also gave him a bath today (guinea pig friendly bath) to make sure his hiney and underbelly are clean. This time when changing the cage I put puppy pads with some towels over top so I could observe his potties. I went out for a few hours and came back he had gone twice and this time they were large spots like the size of am open palm but did not look bloody though they were dark. I have since taken him out and have him in a little area next to me so I can more closely observe and this time i notice it looks like the blood is coming out when he poops and again it is about the size of a dime. I understand that cavies hide discomfort so even though he is eating away at his hay and running around he may be in pain. If anyone could offer some thoughts of what could be happening and/or advice of what I can do from now until I can get him into the vet tomorrow morning I would greatly appreciate it. I am very worried for my guy