What Is The Treatment For Sharp Pain In The Left Side Of The Body?

i have pain in my left/ under my breast/ side of the body and contin. arount my back

Very sharp

My husband goes with me to the hospital , they did all the test , blood , c-scan and they did not see any problem they shoot the morfin in my bodu evry 30 min and i stikll had the pain

they keep me in hospital for 3 days and send me home

nobady knows what happen to my body

and I have this problem at list one 10 to 12 month

any idea , what that