I have sharp stabbing pains in my lower left abdomen usually right before my period or when I'm running or right after sex. The pains are so intense I curl up in a little ball not wanting to move cause when I move one single muscle anywhere it hurts so bad I want to scream. I also have lower back pain and have been trying to have a baby for the past five months and can not seem to get pregnant. What is wrong with me? Could there be more than one thing? I went to the dotor, but they don't know what's wrong with me.