Is A Positive Result In An ANA Test A Concern?

I am very nervous. I was diagnosed about 5 years ago with neuropathy in my feet. I just had my physical with my family doctor and the blood work that was done showed everything normal except my ana tested positive. Per my doctor I went to a neurologist and had a complete blood work testing. There were at least 15 viles of blood taken. Per my neurologist nothing out of the ordinary showed up. No ms, no arthritis, my chest X-ray was normal. She said she wanted to cover all her basis so she wants me to have a pulmonary test done and an echo cardiogram done which I am going to do. My next appointment with the neurologist is in December. I am still scared. Do you think I have anything to worry about?