since february 2012, I started to feel bloated everytime I ate, also I dont get too much hungry ultimately and in 5 months I already lost 50 pounds undesired, Im 6'2 and I used to weight 187 pounds, currently now im 135 looking all skinny like if I were anorexic..another symptoms I have is that I dont go too much to the restroom like it takes so long to digest the food so I had to take laxants to do everyday, I started a diet of eating oat and fiber but still I can't be the same person as before of eating too much, before i got sick I use to eat alot but most of it not healthy and not drinking too much water, and also I work too much, Im always stress and I get like grumpy sometimes but its because of work and I sweat alot because its too much things so yea, now ive been taking laxants everyday and working good but still can't gain weight, I dont know  if it will be a good idea to drink protein shakes again to gain that weight back. Another symptom I had recently I got like my heart going all fast and then I couldnt see anything, I had to sit down and sometimes my pulse is too slow so I dont know, but I dont feel sick anymore from my stomach but I would like to know what are these symptoms coming from?