Stomach pain lower part ?

Question unclear but: Lower right abdominal pain can be from many things. For pain there, appendicitis is always a concern (pain can worsens over time, with fever coming on). If one is constipated for several days, stool can back up all the way to the right side, and cause pain. Having gas may or may not be related to the discomfort (lactose intolerance will cause gas). A hernia or ovarian problem can cause pain.

Need more info: It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. It would be prudent to see your doctor. If you have fever, you should go to the nearest hospital emergency room. Wish you good health!