Spanx are fab, they really work.
Have you a floaty dress that you could wear? Maxi dresses are in and they hide a multitude of sins.
I felt the same after both pgs, but now I look at the photos and my skin and hair has never been better.
Work your good points, perhaps have a new haircut, get a friend to do your make up, get some new costume jewellery (ASda and Tesco do some lovely stuff)?