Well, I did not know that. I apologize. It's just hard to help some people because I can't figure out what they are saying...even when English IS their first language. :)
Mingobear, I think payal does not speak English as a first language ... for someone who does not, she is doing fine.
Payal, sometimes we don't get our menses because in a certain month we do not ovulate. Also we sometimes don't get the period because of stress. Possibly one of these things is the issue. Take another home pregnancy test, and if it is also negative, you are almost certainly not pregnant.
It was kinda hard to read because of your poor grammar and spelling, but i'll try. If you test 15 days after your late period and it was negative than you are not pregnant. You are probably just late...it happens. Stress may also be a factor. You should also be having pregnancy symptoms by now. I have no idea how you can be late for 15 days then take a test...I freak out before I'm even late and take a test the day it is due if I don't start. Also, it would help to know if your sex was protected or not. If you are having unprotected sex and do not want to become pregnant, why are you not using protection? Good luck.