okay i had my appendix out 6 years ago...and ever since then once in awhile I would get a sharp pain above my belly button (where one of the incisions is) it was not all the time so i ignored it...but when it did happen it hurt a lot. For the last few months it has been hurting more and more and now for about a week now it has hurt and hasnt gone away. It is like a stabbing pain right over my naval. It hurts the most when i cough and breath...what could it be? what should I do?