You may have an anbibody that wlil attack your baby if you are pregnant again. I think an Anti D antibody can do that, but there are also others (if I'm remember right)
For a CFS diagnosis... please check out these links and feel free to post in the fibro/CFS forum (I am the CL in the forum):
http://www.medhelp.org/health_pages/list?cid=39
Diagnosing CFS (written for physicians... consider printing it out and discussing with your doctor):
http://emedicine.medscape.com/article/235980-diagnosis