Can anyone give me some advice as to what this could be?

When my monthly buddy comes "strolling" around, I get really sharp pains in my abdomen. The pains are in the same location where I get my normal period cramps, but they're very sharp. The pain stops me in my tracks, and a few times it's been horrid. It only lasts for a few seconds, but it's very painful.

My mother was diagnosed with ovarian cancer a number of years ago. She went in to have her appendix removed, and instead had an emergency hysterectomy (appendix removed as well). The found a softball sized mass on one of her ovaries.

Ailments in my family have never been so lucky as to skip a generation, so I'm just a bit concerned:(

Thanks in advance!