Hi I was feeling just like that my surgery was on 1/9/14 I couldn't have nothing to drink . I started drinking premier Protein shakes 30g protein, 11 oz per bottle and i divided it in 3 portions I have on full bottle in the morning and 1 in the evening total of 60gr protein a day. Today was my 1 week post op appointment with my Doctor lost a total of 15 lbs. Hope you feel better soon and good luck!