40 year old male several days of severe abdominal pain began in your abdomen then slowly over several days travelled to right side and then lower righ?

Appendicitis?: You need to go in and be evaluated as soon as possible. Your description sounds like possible appendicitis which can be life-threatening if not treated.

Appendicitis: This is a classic description for appendicitis. There are other possible diagnoses, (ileitis, cecal diverticulitis), but suspicion is high for the appendix, and you should seek immediate treatment by a physician or emergency department.