I'm fairly new, but I think you're wanting two much to fast and your body told you know. You lost 17lb and then 11 more. That's 28lbs Your body is probably regrouping and then it will go for a gusto!
Your doing great.
Ipersonally have upped over the 300's and my suggestion is to make sure you eat at least three meals a day even if you don't want to. AND eat till you're filled (not STUFFED) but full. Just keep it within diet parameters.
It is really hard to drop immediately from the quantity of food we used to eat. As we lose, our appetites will also decrease somewhat.
I hoped it helped.