Welcome to HealthCare Magic
Hope you are doing good. Medroxyprogesterone acetate
tablets ( DEVERY ) may be given in dosages of 5 or 10 mg daily for 5 to 10 days. Progestin withdrawal bleeding usually occurs within three to seven days after discontinuing medroxyprogesterone ( Devery therapy). Back Aches are among the side effect of the drug.
you can take it for more 3 days, If you don't see any prognosis you should counsel with your gynecologist for re-examining you.
I hope have answered your Query. Feel free to ask him you have any query, wish you good health. Regards