My piggy Opal is acting lethargic and seems to be in pain. Her abdomen is very tender and hard like she is tensing her muscles. I suspected bloat and when i tapped her sides and one did sound slightly different, but I did the same to my other pigs for comparison and it doesn't seem significant. She will do a bit of grazing or drinking then retreat to a corner and puff up her coat. I think it may be a cyst because i noticed blood on her groin area earlier today and made an appointment for tomorrow. I don't think the blood was from her urine because it looked undiluted. What does this sound like to you? There aren't any emergency vets in my area that see guinea pigs, I would have to drive 3 or more hours to get her to one.