I think i am pregnant. after conception nearly 13 days ago...i took an i pill to avoid pregnancy. but i didn't get period. till now i haven't got it.

Be patient: It is unlikely that you are pregnant since you took emergency contraception correctly. It is too soon to test and so any pregnancy testing will have been a waste of money and invalid. One messes up their cycle with they take emergency contraception. If a few more days go by and you still want to test then that will be fine, but not now. Remember birth control is wiser.

You didn't say when : You took the emergency contraceptive in relation to when you had sex. Levonogestrel pills, are up to 89 percent effective when taken within 72 hours (three days) after unprotected sex ; can reduce your risk of pregnancy by up to 95% is used within 24 hours of sex. Sounds like you are 13 days out from sex (at least i think that is what you mean) ; that you have missed your period. Your 2 pregnancy.