Hello user007.. Usually you have health anxiety. Like other diseases, it's also a mental diseases. If you don't care about it, don't treat it, you will become a mental patient. Through a proper counseling and medicine can save you. You will be complete cure if you treat it. My sister also suffering from health anxiety. A normal pain in ab-domain, she thoughts it will be a big issue, I need to admit to hospital. An we all including my parents ware busy to take care of her. Now after treatment for more than one year, she is gradually become normal. And can understand her situation. I believe, you also will be cure. Best of luck.
I am sure you will find many more related post from this great forum, but these articles also helps you to understand it better -
health.harvard.edu/mind-and-mood/always-worried-about-your-health-you-may-be-dealing-with-health-anxiety-disorder
addictionrehabcenters.com/mental-health-and-addiction-therapy-addiction-rehab-centers/