Severe Abdominal Pain After Bowel Resection For Adhesion Related Bowel Obstruction. Possible Reason?

four and a half weeks after bowel resection for adhesion related bowel obstruction , what can still be causing intense pain? bowel movements are regular. The whole abdomen seems to be in pain. The pain is steady. Just got out of the hospital Tuesday, 4 weeks after surgery. finally took an oxycodone today, as the pain was 8 or 9 out of 10. It may be interesting to note that 2 years ago, i had bowel resection for diverticulitis , and there already were significant adhesions present, so it could not be done laparoscopically; I just dont recall this level of pain post-op then.