why women become pregnant while using contraceptives?

Unwanted pregnancy and induced abortion occur in every society and all governments and health care systems face the challenge of providing some elements of abortion care. Annually, millions of unintended pregnancies occur worldwide and most of them were due to the non-use or the inconsistent or incorrect uses of contraceptive methods. The majority of them end in induced abortions. In the developing world, deaths and poor health among women remained too high for the long period of time and it is continuing unless effective action is taken. Half of them are related to unintended pregnancies. So the investigation toward contraceptive knowledge, practices and failure among abortion care seekers is attracted attention of new generation research and it is one of scantly researched area. Contraception is an important aspect of reproductive health and plays a major role in the prevention of unwanted pregnancy. It is therefore a significant factor in reduction of induced abortion rates and improvement in maternal health care. An estimated of 215 million women who seek abortions were not using an effective method of contraception in the world.