Some health issues might seem minor in the beginning but go on to trouble you big time when not being attended to. A Sick Leave for stomach issue can be written as an intimidation in the office that you will not be able to show up for work. Here is how to write one:
Stomach Pain Leave Email for Office
Most respectfully, I want to inform you that I have a severe stomachache because of gas and acidity. I saw a doctor yesterday and was advised to take rest for a day or two.
Therefore, I request you to sanction leave for two days from the office.