I had surgery about 9 days ago. I had no nausea and vomiting, which was great because I can deal with anything but nausea. Now, all of a sudden out of the blue I am nauseous beyond reason. Phenergan isn't helping. Eating isn't helping. I am barely getting my water in. The weird thing is I feel like I have to vomit constantly and when I try to, nothing comes out. What is going on? Can someone help me and please tell me how to make it stop? Thanks.