When i should take pregnency test?

It all depends ont he timing of your ovulation.  Typically you ovulate two weeks after your period although that time span is different with every woman.  If you haven't gotten your peroid in another week, i would suggest taking a test.  But don't be misleaded by pregnancy test accuracy percentages.  Most tests claim 99% accuracy, which in the long run is true.  But if you test to soon, you will get a negative test. test again in a few days if the first is negative and you still haven't gotten your period.  

     Just so you know.  I am in the same boat as you right now. I've been getting advice from so many good people online hun.  I had sex with my boyfriend for the first time on the 8th of october, and still haven't gotten my period.  my last period ended on september 11th.  i still have yet to see a positive test.  its just a waiting game.