What am I doing wrong?

 I am going up and down with these 2 pounds for the last week. I cannot tolerate a lot of foods right now I am 2 months post op. Here's what I ate today.... I had 3 protein drinks and pinto beans with cheese. I am working out 5 days a week for about 45 minutes. I asked something yesterday about this, but I am just a worry wart.  Is this a normal struggle? 

Losing over 50lbs in two months makes me think your body wants to catch it's breath. This too shall pass. Congrats on your loss thus far!

Sounds to me like your caloric intake is too low. Your body is in starvation mode and holding onto anything and everything it can. I know you said you're struggling to find things that sit well with you but I would try and get your calories to at least 600 if not 800 a day.