Abdominal distension with belching.

I have this problem for past 4 yrs In starting I thought it is due to food habit after changing my food habit with fruits and healthy foods still the problem is pursuing. Previously my abdominal size is around 83 cm now it is about 98 cm. I can feel some changes in my stomach after eating food it will swells and it hurts my ribs and even I can't able to sit also, very deep uncomfortable in breathing. I can feel the difference the day eating fruit and empty stomach my stomach will get little flat. But the days eating dall rice and egg, Non veg like chicken mutton again my abdomen size will increase and it hurts the ribs. I have tried many home treatments like daily drinking cumin seed water, ajowain water, ginger water so on. But while I am taking these can see mild improvement but no cure. There is no proper excretion of motion I will excrete my faecal by weekly once even in a very little quantity only,the days when there is no defaecation my abdomen size get increaes as well as weight