How to ask for leave with a stomachache is convincing

According to the query of Baidu Library, the persuasive sentences for asking for leave with stomachache are as follows, for reference only:

1. Dear leader/teacher: Hello, I suddenly have colic today, and the pain is unbearable. I hope to take X days off and go to the hospital. thank you

2. Hello, teacher! I have a stomachache today, like diarrhea. I have diarrhea all the time and feel very uncomfortable. I want to take X days sick leave, please approve!

3. Dear teacher/leader: Hello! I got up and went to the toilet five or six times this morning. My stomach hurts very much. I'm a little afraid of gastroenteritis. I want to ask for leave to go to the hospital, and I hope the teacher/leader will approve.

4. Hello, leader/teacher. I'm XXX from XX Department/Class. After lunch at noon today, I had a severe stomachache, nausea and vomiting many times, and I couldn't continue to go to work/class. I want to call in sick and go to the hospital. I have contacted my family to accompany me. Please approve!

5. Dear leader/teacher: Hello! I can't stand the stomachache this afternoon, with vomiting and diarrhea, like acute gastroenteritis. I really can't stand it. I want to ask for leave to go to the hospital/school doctor's office until noon tomorrow. If it's nothing serious, I'll go back to work/school. If the illness is serious, I want to take X days off sick and rest at home. I hope you can approve!