1 Week post op and sad

I posted before but don't see the post, why is that? I had by-pass on the 20th and was finally released yesterday (the 25th). I can't seem to eat anything. I finally got about 2 oz. yogurt down this morning. I am not throwing up just can't stand the thought of swallowing. In the hospital they gave me 18 percent juice and ice and pudding and jello. The thought of sweets make me sick. What do I do? I am afraid of becoming dehydrated. Please please help, what can i eat? Not sweet? Stacey