Digestion problem. Medicine and!

My age is 31, weight 120 kgs and 6.2 feet height. For the last 6 months I am suffering from digestive problems. I have to go loo 3 or 4 times in morning . stomach pains and loo it's quite hot. Sometimes the loo(laterine) is sometimes thick and sometimes thin. But most of the times its undigested food even after I chew. In urination sometimes there is burning. Most irritating problem is I have feeling of burp coming, but does not come and gas comes up. There is almost pain in lower abdomen. Even having home food I get I feel very tired and my sleep is never completed, just change sides. Have anxiety as well. I keep on thinking. I do half an hour walk everyday and mine is a sitting job 9 hours and I travel daily by cab for 4 hours back and forth I have tried ayurvedic medicine and