HELP - weight gain???? Did I blow it?

Okay I had lost down to 212.2 and over the next week I weighted between 212.2 - 215. I thougt PMS. Well that never occured (yet) and I yo yoed up and down a few pounds. Today I weighed in at 213. I am concerned. I have been having the munchies and feel like I could eat and eat although I know I cant as I tried to eat an egg sandwich and only got less than 3/4 down. I have noticed I an also going to pee more often than I was and all of this is freaking me out. Although on New Years eve I tried a bite of chocolate and got sick. Please let me know if anyone has experianced this - I mean the gain and than the loss. I know sometimes my scale will say one number and it might change by 1/2 lb but the 3 lbs freaked me out...... I feel like my surgery stopped.... I have done so good and have stayed on track. WHY is this happening?

Take a breath and relax most everyone I know has yoyo'd. The most I ever went up/down was 5 lbs in 2 days. You are doing fine! Kia