Malabsorption or not. Prblm?

Symptoms for me Low weight (not gaining weight) Eating food regularly Stomach irritation next day after eating non veg not always but Feeling uneasy and weak  in stomach after emptying bowels .(having NV before day) Feeling like want to go bathroom whole day(present ok) Some times more gas through mouth Feeling week and low stamina whole day(taking vitamin supplements d,b12,calcium)present better Normal stools but 2,3 times.continuos wash room after eating nv(flupentixol used 1 year. Doctor told anxiety.now free with this problem also) Some times,Blurred vision, ,some times 140/ 80 bp when I feel anxious After completing bowels little disturbance in left side of stomach mostly also feels irritated and weak in the morning. Present no diarrhoea, no gas,no nausea,stamina better not too good but,no abdominal pain like previous all are controlled but not gaining weight. Only vitamin calcium deficiency less blood found. Colonoscopy ,endoscopy, abdominal scan,sugar,harmones,all ok.prblm??