My 12 year old Jack Russell just recently had a some drops of blood in her stool. She was straining a bit the last time she went, and this time she was straining a lot. Her stool wasn’t completely solid, nor was it diarrhea. She has been very gassy the past couple of days. Now her stomach is making noises, but she just passes gas and it stops. She ate her food normally before this happened, and now she doesn’t seem to have any other problems besides being gassy. Do I need to be concerned, or could it be from straining so much?