Feeling bloated. Appendicitis, in its progressive stages, can make a person feel unpleasantly bloated, something like the way you feel after a large or badly digested meal. However, this feeling is not caused by actual gas, but by the appendicitis itself. Unlike gas, the effect will not pass in a few hours but will be chronic and persistent. The patient will unconsciously try to expel gas but will fail, as it is the infection affecting the intestines and not gas.