Thanks for the query to H.C.M. Forum.
It is very nice to the query of so conscious patient .
The medroxy progesterone
( depo provera) injection causes pain at the site of injection ( as in your case) , thrombophlebitis
This injection also causes nausea, fluttering breast tenderness, fatigue, dizziness anorexia
( as most of these type of symptoms were present in your case.)
Since your age is 40 years and in this age group patient estrogen depletion is very common ( perimenopausal syndrome).
Patient itself feel some uneasiness and palpitation
so nothing to worry .
I think you are so intelligent so need not say something extra.