Happy Birthday Karen!!! I know I have been on the board here too much, because when I read it was your birthday, I remembered you were a Scorpio, and I don't even believe in or follow horoscopes!
I hope the dr figures out the thyroid diagnosis and clues you in...that would be nice, huh? I remember when I was on the pill my TFT's would be off because of the hormones ( which was normal)...maybe the same thing can occur in pregnancy?
Anyway, have a great b-day and congrats on your son!