I think that my only symptom that I could really pinpoint as being different from my first pregnancy was hunger. . . of course during my first pregnancy I was sick as a dog from the day that I found out until the day I gave birth!  Dind’t gain any weight though and stil lhad a 9 pound baby!!  I actually felt a lot better on the dex than I thought I would - I didn’t have any of the symptoms that are commonly looked for etc. . . I am currently being weaned off of the dex and can honestly say that being weaned off is WORSE tha nbeing on it. . .but from speaking to a couple of other that have taken it it seems that my doc tried to wean me off to quickly.  We’re slowing down the weaning off on our own and I feel much better.  You can ask any questions you’d like, I’m happy to share.