Hi hondo,
Yeah, an enlarged spleen is not unheard of in autoimmune diseases. There are many causes for it, and I've included a link for you. With the fluid on your heart, was it an infection? That is one of the causes of an enlarged spleen. So is anemia, which is so common for us too. What is the treatment plan for you?
Here's the link. Let us know how you're doing okay,
Ginny
http://www.mayoclinic.com/health/enlarged-spleen/DS00871/DSECTION=causes