RAP is if you have at least 3 stomachaches over 3 months, and they’re severe enough to keep you from doing everyday activities. They can be caused by clear medical problems, such as heartburn or anxiety. RAP feels different from person to person. The pain may start and stop without warning, or it could be ongoing. Some people describe it as a dull ache in their belly. Others have sharp cramps. Besides pain, there may be symptoms like diarrhea or throwing up.