Sick, but no weight loss or inches lost for three weeks!!!

Hi all - I'm new here and been using the system since December '12 but in the last three weeks I have been really sick with a strep throat infection, and always eat within my calories, but I have not lost one ounce. I have even gained weight while sick! Why does this happen? I had a stomach virus weeks ago and lost no weight then either. My measurements are the same, too, and clothes aren't any looser. What am I doing wrong? How can I make my food diary public?