Hi, I am a 57 year old female. Last night I began having stomach cramps, very low in my abdomin, below my waist. It felt as though I had to go to the bathroom, but could not. As I sat on the toilet I began to feel sick to me stomach, and vomited very violently followed by breaking out in a cold sweat. Shortly after that I was able to go to the bathroom, very loose stools, and then vomited again. This morning my stomach is still cramping, very low, and I still feel as though I have to go to the bathroom, but can t. Not so much nausea, I have been able to hold down fluids. When I do, it is a very small amount of loose, mucousy stool with some bright red blood. What is this? Can I wait until tomorrow to see my doctor?