Thank you for the query.
As you have constipations history and diverticles perforation, there is always a risk that new diverticles has been created. Moreover, after peritonitis
and abdominal surgery
, you definitely have some adhesions inside your abdomen. It can result with constipations as well.
It is strongly advised at your case to have abdominal ultrasound
and full blood work, CRP performed. If acute inflammation is present, you should have an antibiotics treatment. After 3 weeks you should have colonoscopy
Hope this will help.