Hi, Welcome to HealthcareMagic Forum.
Irregular bleeding is the most common side effect of Depot Provera
. In some women there may be increased spotting or breakthrough bleeding
, whereas others may experience Prolonged and heavier bleeding. If you use it for more than a year, your Periods may become fewer and lighter. They may return within 3 to 6 months after you stop taking injections. You should not experience heavier or Prolonged Bleeding for not more than 3 Months. If it is Prolonged more than this, you should see your Doctor Immediately.
Good Luck and Wish you Good Health.