Discomfort in stomach. A normal range.

It started in February when I had an infection in my stomach. I recovered but my appetite was not back until a month. I consulted several doctors and several tests were done which were in normal range. I was then given some antacid and my apetite started coming back.. I was all fine till September until I moved in to Bangalore in October and since the very first day I have been facing issues like bloating and slight burning sensation in my whole abdomen. Sometimes during a bowel movement I can see mucus in my poop with a little bright blood on it. And some days it's absolutely normal, somedays I will be constipated and somedays I might have multiple bowels. I can't call it pain but it just doesn't make me feel normal.. I am always scared before I eat anything. I really can't understand the problem. I recently got my complete blood count test. And everything was in a normal range. 5 months back I got my thyroid, c-protien and LFT test everything was in a normal range.