What Causes Persistent Pain In Lower Left Abdomen Post A Corrective Surgery?

Question: Just for background, I had a complete hysterectomy in 1989. This past October I went in for a routine colonoscopy (sp?) The doctor perforated my colon within 15 minutes of starting. Since I was in a surgical center, I had to be transported to the hospital ER by ambulance (blaring and all!) After getting there my husband was told about an hour repair surgery. . . It took close to 4 hours. I stayed in the hospital 5-6 days.
After going home, in lots of pain, I began to vomit pure bowel. It was like a fire hose!! Kid you not! To make along story short, I was rushed from the doctor's office by ambulance back to the hospital.
I ended up with a blocked bowel from the first corrective surgery. Wen't in and fixed that, came home
Several days later at 97lbs. Went through my recovery, etc. etc. I kept telling my doctor I had pain in my left Lower side, he did a ctscan and found nothing. I also told him it hurt when I urinated and had a bowel movement. His latest advice has been to increase my fiber. . .didn't help. To this day, 6 months later, the pain is consistent. I am also wearing a diaper, just in case, especially at night. It has been a total nightmare. I have an appt. with a gyn tomorrow. Do you have any advice at all.