I had sex in the end of febraury and I've also taken I-pill on the same day of the sex.I also had a pregnancy test at least five times and every time I got a negative result,den also I missed my period i.e.on march??

Go to the doctor. We can't tell you if you are pregnant or not.
How old are you?

18

You make an appointment to see a Dr. then you will know one way or the other.
If you are going to be sexually active you may consider birth control and condoms.

Is dere no any other method of knowing it at home??

When was the last time you took a home pregnancy test?

2 days ago and this was d fifth tym I was taking this test

You are probably not pregnant then. Worrying can cause you to miss a period or be late.
Use birth control from now on. It is the responsible thing to do. But get yourself checked out by a doctor just to be on the safe side and to make sure you don't have any STD

If the "i-pill" is another name for the morning after pill, it will mess up your cycle times for even a month or two

Really thanku for your suggestion but I thought that it may get late.so,I took a MTP kit and after taking it,I got my periods..