my cat zues has had bllod in his stool for the last 2 days. Its bright red and on the top of the stool. He is a 9 yr old tabby he is a touch over weight. I recently brought me plants from my deck inside as i was working out of town for a week. He was chewing on them a bit as was his sister who is perfectly fine. I have removed them today. During his last bowel movement there was blood present and he threw up right after, then countinued to be his normal self. Any idea if its a problem caused by the plants or another medical condition. Vets are closed till monday as tommorow is a holiday due to july first falling on a sat, so the vets are closed is it serious enough to go to the emergency after hours clinic?