Wow! Whew! Take a deep breath! You have a LOT going on here, including complications that you've had to deal with. Your body is going through a tremendous shock and tremendous changes, and everyone is different at this stage. Let me just address MyFitness Pal, though. I, too, log every single bite, and when I reached stalls it was SO beneficial to look at everything and see where I might tweak things. I highly recommend you continue to do this, now and forever. At the same time, the calorie goals set my MFP are for people who are on traditional diets. The unsleeved masses could not comfortably or successfully consume the small number of calories we can consume after surgery. The nutritionist at my bariatric center (of excellence) told me I should be consuming about 800 calories per day, including the 250 I get from my two protein drinks. Right now, you should be highly focussed on water, protein, vitamins, and as much exercise as you can do without injuring yourself or setting yourself back.
After a lifetime of failed dieting, it's easy and natural to feel that once again we are failing. However, this is a game changer, and all the rules are different. Again, take a deep breath, track, relax, and go through the process. It's going to be ok!
