Well first off it's pregnant. The shot is proably one of the worst birth controls to go on it makes you gain weight like crazy.Even my doctor said the same thing.If you think you might be pregnant wait a little while like a week or two and then take another pregnancy test.

The shot does not always make you gain weight. Average weight gain is 5-10 lbs a year.

However, some women do gain a considerable amount. This is still normal and not a sign of pregnancy or miscarriage.

Your body DOES think it's pregnant; that's the whole point of birth control. All forms of hormonal birth control trick the woman's body into thinking it is already pregnant. That way, it doesn't ovulate.