I'm constantly paranoid that i've got or am going to get an illness, infection or disease. what should i do?

Anxiety: Health anxiety is extremely common with many forms and nuances. You can think of it as a type of o c d . Many useful therapies can help and you should address if its interfering in you life. It can become debilitating. Talk to your doctor or consider counseling.

Agree w Dr. Re: Uncontrolled fear can wreck havoc with your quality of life. Have you considered cognitive behavioral therapy?