Hi
As you are not having any specific symptoms and only have worry that you might have some serious illness.
It is because of anxiety.
So consulting with a psychiatrist will help you to overcome this.
Thanks and regards.
Next Steps
consult a psychiatrist in person.
Health Tips
Go for regular brisk walk.
Do some breathing exercises or meditation.
Take healthy food.
Avoid any substance use.
Maintain good sleep hygiene.