Sometimes I feel odd twitches near the right of my abdoment when I'm sitting concentrating on work or at home, I know it's not my period flowing. What's wrong with me?

You're probably suffering from peristalsis.

You could have a pulled muscle. That's what I would bet on.

It could be gas.

There are so many things it could be. If you're really concerned, see your doctor.

You're probably suffering from peristalsis.

You don't suffer from peristalsis, everyone has that every moment of the day. It's the name of the motion that causes food to move through the intestines.

You don't suffer from peristalsis
I was being a tad sarcastic, hoping someone would look it up. Didja notice I even spelled it correctly?