I feel like death

Ok so I had weight loss surgery March 6th and found out i was pregnant April 16th. The first couple weeks were fine I was starving constantly but the last weekish I literally can't keep anything down. I feel like shit, like literally all I want to do is sleep becuase then I don't feel like vomiting or have such bad indigestion or heartburn I vomit. I can only hold down a few bites of food a day. I have lost like 10 pounds since I started throwing up constantly. I'm also constantly dizzy and lightheaded. I don't know what to do anymore. My doctors gunna have me start a vitamin b somthing and unisom tomorrow but idk If it doesn't help idk what to do i just feel absolutely horrid.