hi i will try not to make this too long , four weeks ago i suddenly started having loose stools after having constipation for 25yrs about a week later it stopped and i was okay again , now it is back with a vengeance , i started getting loose stools again an aching at the bottom of my abdomen which occasionally goes under my left rib ,all the way up , lower backache , a distended stomach ( up between my ribs) my gas smells awful and without sounding disgusting ,my mouth tastes like my gas smells , and i feel generally unwell