Jodsan, Hi.
Sorry about your loss in January. I had never even heard of ANA before today, so I am sure you know more than I do. My result is the lowest of abnormal, but from what I have so far gathered, in pregnancy it can cause your body to have an immune reaction to the growing bub. It apparently does this by making your blood sticky. It is treated with a combination of aspirin and Clexane (?), ideally started before pregnancy.
Meanwhile, I am fascinated by the connection with CFS - I suffered from it in my early to mid-20's. I wonder if there is a connection. What is the test for lupus called?