About i pill ec. Effects using once?

I did not understand your word. "gangulo" But i will answer the issue in broad sense. Sex is a expression of human love. One gets sexually mature by age of 12-13, but body's and Mind's maturity takes more time. a person is called youth after 21 years of age. Till 21 the female's body is developing and any pregnancy happening in such a tender age before 21 can cause tremendous damage to the health of the girl. Hence one must be aware that his or her body is still not mature till 21 years are over. Sex can lead to pregnancy. But sex can also transfer infections ( STIs) from one partner to another. Hence sex is a double edged sword. Anyone who is indulging in sex before marriage, must ensure that both these things, STI and pregnancy don't happen as both can harm the body. In fact some STIs can even cause problems for kidneys, uterus, heart etc. Hence in sex before marriage and in couples wanting contraception, just using methods to prevent pregnancy like pills, Copper T, etc wont help, as they will not protect against STIs. These women must use condoms too to protect against STIs and pregnancy. EC is Emergency contraceptive pill. Hence it is to be used in "emergency". Those couples who have sex very infrequently like once a month etc, they can use this pill. It is also used to prevent pregnancy in victims of rape. For this pill to be effective it is to be taken within 36 hours of the unprotected sex act. This EC will cause the lining of the uterus to be hostile for the sperms and also does not allow pregnancy to happen. Thus it can protect from pregnancy ONLY.