Your ESR is perfectly normal. Normal ranges are 0-20.
I have a strongly positive ANA (1:1280), with a normal ESR. The ESR marker is not a very good indicator of disease process unless the numbers get really high. I start feeling "unwell" when my ESR gets to over 20. Otherwise it can fluctuate between 0-20 and I don't feel any different.
Lots of people who don't have lupus or any other autoimmune diseases have positive ANA's. Some people have high positive numbers but absolutely no symptoms.
It's important to go by the symptoms as well as the blood work. Lupus is bizarre that way.
Ginny