Are you sure it's a stitch? Where exactly is it located?

Years ago I had a really sudden abdominal pain that happened when I was doing high-impact aerobics or running or walking fast with high heels. I had to sit down because the pain was so sudden and intense. Turns out I had ovarian cysts. It took me months to figure it out, because I thought it was something to do with breathing or the intensity of the exercise. It's not necessarily a big problem, but if the pain is not that of a typical stitch, and located a bit lower, you might want to investigate further....