What does it mean when you sharp pain in your vagina and your side starts to hurt too.

Kidney Stone. Most common cause for flank pain (below your shoulder blade) with pain into groin area would be a kidney stone. There may be some blood in your urine that you can see or only detected on microscopic evaluation. Double up on fluids for a few days, if the pain persists get to your primary care physician or obg for evaluation. Sometimes a special x-ray called an ivp or a ct is necessary to confirm.