Hello,
Depo-Provera is a long-acting progestin (hormone) form of birth control.It was seen
in studies that after a year of
Depo-
Provera injections, 57% of women were not menstruating and after 2 years, 68% of women were not menstruating. So the irregularity in menstrual cycles is because of that. However use condoms during intercourse to avoid any unwanted pregnancy if you stop using depo shots.