Hello, I have gone through your query and understand your concern. Probably you had a episode of Vasovagal attack. Vasovagal attack occurs when your body overreacts to certain triggers, such as the sight of blood or extreme emotional distress or pain or Straining, such as to have a bowel movement. This cause a sudden drop in your heart rate and blood pressure. That leads to reduced blood flow to your brain, which results in all the symptoms you had after Straining and passing stools. It is usually harmless and requires no treatment. But this can be a sign of a more serious condition, such as a heart or brain disorder. Thus you need a thorough physical examination by your doctor and further neurological and cardiac evaluation like Echo cardiogram, Electrocardiography, and exercise Stress Test. Hope this helps. Please write back for further queries. Wishing you good health.