I Have Pain In And Through The Right Side Of

I have pain in and through the right side of my abdominal prior to this pain I was taking hydrocodone for lower back pain each night for a week. I became constipated and tried an enenima today. A lot of gas and hard stool three to four pebbles. Know I see a little blood in a slime string come from rectum when I tried to push out more hard stool. Still feeling the pain in the front right side to the right buttock