Dear Needles, Depo-provera is a very effective contraceptive method. A woman is given a Depo injection every three months. Depo is used by more than fifteen million women in more than ninety countries. Your provider will also help you switch from birth control pills to Depo-provera, if that's what you choose. Depo tends to make a woman's periods less regular, and spotting between periods is fairly likely.
Some women stop having periods completely.
If your pattern of menstruation after being on Depo concerns you, discuss it with your provider. Weight gain is common with Depo use.