For the last three months I have had a shooting pain across my back, centre, just by the bottom of my ribs. The ONLY time I encounter this pain is during/after sex. The pain almost radiates and causes me to feel nausea when it does. The pain goes after a minute or two and I feel this no other time. I am a healthy 27yr old female, I exersize a lot during the week. One doctor said I may have torn the heat betweenu ribs but I find it odd I only get pain with sex. It only seems to occur if in missionary position.