I took DEX with my second pregnancy-  no stretch marks,  I only gained 25 lbs....but I was really hungry and anxious.  I could not sleep which made me crazy.  It started out as lots of energy but then just wore me out.  I was very agitated by the end.  The symptoms got worse as things went along...I had an amnio at 20 weeks found out we were having a boy at 22 weeks and the started going off...

I am usually a very level person and it just made me feel really mad! 

Good luck to you.

Both my boys are SW CAH and are doing great (7 and10 years old)