Hello. There is such a thing as chronic appendicitis
. This usually occurs when fecoliths (small rock-hard pieces of stool) get inside the appendix stump and cause inflammation. The pain you described with right leg flexion is characteristic of a "psoas sign" which helps support this diagnosis. In "chronic" appendicitis, the omentum (a curtain of fat overlying the gut) will usually start sticking to the inflammed portion of gut, causing more discomfort that can be constant.
Alternative diagnosiis would include diverticular disease
, irritable bowel syndrome
, functional constipation
, or ovarian pathology.
The most usefull test in this case would be a Cat-Scan of the abdomen and pelvis with PO/Rectal and maybe IV contrast. If normal, I would then order a colonoscopy
If it is chronic appendicitis, this could be potentially dangerous. It usually responds to a long coarse of antibiotics, which can also be considered empircally if you dont have access to testing.