What might cause excessive bloating (my stomach becomes hard almost as hard as when I was pregnant) lots of gas, abdominal pain, vomiting, and diarrhea? No fever. Things start to improve once I vomit, but the diarrhea continues for several hours. This is the second or third time it has happened. I do not have my gall bladder, it was removed 5 years ago. I m 53 years old, and not pregnant. I m currently in menopause.