<s>[INST] i am very worried. for the last 3 months i have had abdomen problems. i thought at first i might be pregnant but after urine and blood work every came back negative. i also have been getting (monthly periods) although they have been very abnormal only last 2-3 days with very large blood clots. but my question is what could be going on with me if im not pregnant. my belly is now so swollen and my abdomen is always hard... and i have lost weight [/INST] abdomen can be seen distended due to 8Fsfetus,fluid,flatuce,faces,fat,full bladder,fibroidyou need mor investigationabdominal x ray,abdominal u/s,urine and stool routinealso hormonal assay </s>