Still vomiting every day several times after Roux en Y Gastric Pass. What can stop it?

I have already lost a lot of weight since the gastric by pass two months ago. but I still cannot eat solid food. I can sometimes keep a liquid soup down. Pureed food just resulted in more vomiting. First thing in the morning, before any food, I vomit up masses of mucous. Due to all the weight I have lost my blood pressure has fallen dramatically. Dr is seeing me once a week and I am still not fit enough to return to work. It feels really tough. No one warned me that it would be this bad