If you fall into the Four F's (Fat, Female, near Forty and Fertile),
you're a likely candidate for gallstones. Gallstones are created in the
gallbladder, which stores materials including cholesterol and bile, usually
squeezed into our intestines to digest. When that doesn't happen, the stones can
get lodged in the gallbladder, which is painful, especially under your ribcage
on the right side.