Thanks for the query to H.C.M. Forum.
I would come up with these possibilities for this right side pain,these includes.
1 Old surgical hematoma
, diagnosis can be confirmed by physical as well clinical examination. Ultrasound
2 May be due to appendicitis
, most probable cause . Diagnosis can be confirmed by ultrasound of abdomen.
3 Right side urinary tract
system stone , diagnosis can be confirmed by ultrasound of right side urinary tract system.
In my opinion consult operating surgeon and get his opinion.
Good luck. Dr. HET.