Nothing. I actually lost around 30 lbs from my PP weight, but gained 9 lbs third tri, but it went away after I delivered him. The only nice thing that came out of Hyperemesis. lol
I lost about 3 lbs. Didn't gain until about 24 weeks or so. I only gained 24 lbs though. I went to 36 weeks so I most likely would have gained AT LEAST 10 more lol.