Im 5 weeks pregnant and im having a sharp pain on and off today on my labia majora on one side.

Don't Worry: During early pregnancy, the body is adjusting to extreme changes in hormone levels. There are many hormone receptors in this area that could be reacting to the change. If you are not bleeding, having abnormal discharge, or severe pain, relax and see how you feel over the next few days. If you have any of the above you should immediately see your OB.