HI, I am having a throbbing kind of pinching pain in my left side only where I would normally get menstrual cramps. But my worry is that the pain is in one side only, and my period is late. It should have been in the begginig of the month, but i have been known to skip a period once in a while. But at the time, i had very very lite bleeding; and that is very unusual for me. I'm worried that i might be pregnant do you think so?