Thanks for the replies everyone! I just checked in at the forum for the heck of it and realized there were replies - I didn't get email updates like other forums do. I agree with those of you who say I need a complete medical work-up. I'm going to a new doc in a few days and will let them know what's going on. I read something that might be causing the trouble that I wanted to share with you guys: when you sit for extended periods of time (more than 40 minutes), your body starts to release melatonin because it thinks its time for sleep. I've never been one to exercise and I'm sitting more than ever the last few years since I started writing for a living... I feel great after I do some yard work so it seems to fit. I've always been kind of lazy (thankfully never overweight, though) so, since both doctors did do a pretty thorough blood screening (read through the records and saw that he did, indeed, run my blood for Thyroid function, electrolytes, blood sugar, a complete CBC, and much much more), I'm going to just assume it's a lack of exercise.

You guys are great, by the way. It's amazing that total strangers are willing to extend a helping hand Have a great day!