I had surgery on 5/07/15. Day of surgery weight was 206. Now I am 182 and have been this weight for 3 months . I have been exercising at the least 4 days a week . I don't understand why I can't loose anymore . I went back to my NUT and she told me not to drink the protein shakes like Atkins or muscle milk . So I cut those out . She told me to only use medical quality protein powders. So I do . Help please