Thanks for the query to H.C.M. Forum.
No doubt pain at first was in pelvis,but now it is virtually all over on the right side.
In my opinion only one reason of pain may be as,
Acute & chronic cholecystitis
( inflammation of gall bladder
Pain of acute cholecystitis
become more generalized on right side of abdomen .
This pain radiates to the interscapular area, right scapula and right shoulder joint.
In acute stage we will not find any thing in C T scan, and blood ( mild leucocytosis 10000-15000 /cmm).
However physical examination may present ( Murphy's sign).
Consult physician/surgeon and get their opinion.