Liz.....During my pregnancy they increased my florinef by .05mg and my cortef by 5 mg, I was just monitored very closely.  I do have to say it was very scaring during because of the lack of knowledge of what to expect during the pregnancy.  My sister and I have always had weight problems.  If you could see my immediate family, you would notice how slender and they have a high metabolism rate.  My sister and I are very noticeably heavier vs our other siblings (4)---weight always ranging from 150-200lbs even though we both keep ourselves very active.  The one thing we did notice is that our muscle mass was and has always been alot more then the rest of our families.  When nurses weigh us they always figure lower then what we are, they just refer to us as "solid".  I always cringe when the doctors increase my meds because I know how much harder it will take me to maintain my weight. I work on maintaining and not losing, I have never have been in anything smaller then a 12 size why start now!