I have never had stomach or intestinal problems, no heartburn, nothing. 7 days ago I started experiencing severe stomach pain, bloating, gas, noisy intestines, stool turned clay colored. The condition has worsened. Antacids don t help, Nexium didn t help, Gas-ex didn t help, fasting didn t help. Can t sleep through the night. Now I have loose floating stools with mucus and blood. What is it?