The birth control patch is a thin plastic patch placed directly on the woman’s skin.  It is a hormonal method of birth control which can be obtained through prescription.  

Birth control pills also known as oral contraceptives  use synthetic hormones to prevent pregnancy.  There are two types : combined and progesterone only. The combination one  contains  synthetic estrogen and

The  contraceptive sponge is a plastic foam which contains spermicides. This saucer-shaped device is a barrier form of birth control. Pregnancy can occur as soon as you stop using it.