I took a ipill and i still hvnt got my period.?

That pill can throw your period off schedule a little bit. Did you take the pill the same day or the next? If you wait more than 30-40 hours you are taking a big chance. It really only makes you slippery so an egg or sperm won't stick. If they stick I don't think it works. Take the pregnacy test again. Also having a case of nerves can mess up your period cycle.