New Stage - penalty for eating

I guess I entered new stage - of pain after eating ANYTHING. I am not sure if this is normal or not. I know that some of the readers had previously similar experience, please share with me. Before the soft food like cottage cheese would just go through the pouch. Now everything stops there. After few bites there is a lot of pressure and discomfort. I suppose to have three meals - but that would mean totally inadequate nutrition. So I munch. A bit of cheese, sip of milk, etc. One low-fat string cheese stick (60 cal, 6g protein) is a major effort to consume. I tried the soup again, but I could only have may be 2 oz. The strange thing is that in the last 3 days my weight remained virtually unchanged, even though I ate only about 700 cal per day. It just shows how my system is resistant to weight loss. It was happening before, except this time instead of starving at 700 calories I have to force myself to eat 700 calories.