Diarrhea and nausea during ovulation are a very common problem, especially during sexual intercourse. This condition is often called "ovulation diarrhea" or "sexual diarrhea." Although it can be uncomfortable, it is not a serious illness and most people can tolerate it in most cases.

E. coli is a common intestinal bacterium that can cause diarrhea, vomiting, fever, and nausea. When the body's immune system is unable to fight off the bacteria, it can cause serious health problems, including diarrhea, vomiting, pneumonia, and sepsis.

If you experience diarrhea and nausea during ovulation, you should seek medical help promptly. Your doctor may recommend tests to determine the type of bacterial infection you have and provide you with appropriate treatment recommendations.

If you're experiencing ovulation diarrhea and nausea, don't be too concerned. Although this condition can be uncomfortable, it is not a serious illness and most people can tolerate it in most cases. If you are worried, seek medical advice promptly.