Would any injection break the pregnancy?

It depends on the type of injection and the stage of pregnancy. Some injections, such as the progesterone injection commonly used for contraception, can prevent pregnancy from occurring if given before ovulation but will not terminate an existing pregnancy.

On the other hand, certain medical interventions involving injections, such as methotrexate or misoprostol, are specifically used to terminate early pregnancies under medical supervision. These injections work by blocking the hormone necessary for maintaining the pregnancy or by causing contractions to expel the pregnancy tissue. They should only be administered by qualified healthcare professionals in appropriate clinical settings. Self-administering any injections for the purpose of terminating a pregnancy can be dangerous and should not be attempted. If you believe you might be pregnant and desire to explore various pregnancy options, you are strongly recommended to consult reliable information sources, medical professionals, or support services in your local area.