Hi. I Have Had Some Issues With My Health Over

Hi. I have had some issues with my health over the last few months. I have had headaches, muscle pains, constipation, and dry throat. But most concerning is my stomach. I have been getting severely nauseous a few times a day where I need to stop everything I'm doing so I don't vomit. I've also had random stabbing pains in my stomach that come and go for a few minutes where I need to lay down. I'm 21 and male, Asian