I'm so sorry your having to go through all this Jen. I had that same saline test done and yes, it wasn't any fun and I had some pretty major cramping also. I really do think the lap is a good idea. I was actually going to have one done for my fertility problems just before I found out I was pregnant. Its realy an exploritory surgery and can really answer a lot of questions. They should be able to tell whats going one with this funky cycst you've got and tell about the endio and make sure everything else is ok. You'll be laid up for a couple of days but I've heard it isn't too terrible. Good luck sweetie and keep us posted.
-------------------- Taking it one day at a time.....