I had my surgery Jan 8th. Loving it so far! However, still adapting to the lack of appetite. I'm STRUGGLING, but managing to get a Protein shake in, greek yogurt and Water. About 600 calories a day. I've started feeling shaky, nauseated and light headed. ALmost like i'm going to pass out. Wondering if I could have low sugar, Iron, (already struggle with low blood pressure). anyone else?