What the 3 month injection "Depo-Provera" does to your body is prevent pregnancy by releasing a hormone called medroxyprogesterone into your body.
The hormone works by stopping the woman's egg from developing fully each month and prevents fertilization.
It also thickens your cervical mucus and makes it difficult for the sperm to reach the egg.
The primary mechanism of the 3 month injection Depo Provera is preventing your ovaries from releasing na egg each month like your body normally does when you're ready to become pregnant.
The cervical mucus also thickens as a result of the Depo Provera injection and the thickened cervical mucus creates a physical barrier, making it harder for the sperm to travel into your uterus.
And some women who take the Depo Provera injection may experience lighter or no periods after a few injections and others may have irregular bleeding.
The potential side effects of the Depo Provera injection are weight gain, mood changes, headaches and even decreased bone density, especially in younger women.
Other potential effects of the Depo Provera injection are breast tenderness, abdominal pain and dizziness.
The Depo Provera injection is highly effective when it is administered on schedule, but it's not 100 percent effective and there's still a small chance that you still could get pregnancy.
It's crucial that you get the Depo Provera injection done by a doctor and discuss any concerns or side effects.
After the first Depo Provera injection, using condoms during sexual intercourse is still recommended for the first 7 days.
Also long term use of Depo Provera to prevent pregnancy can possibly decrease your bone density, especially if you're younger.