Thanks for writing to us.
The delay in your periods is likely to be due to the side effect of the emergency contraceptive
that you took. Since your repeated pregnancy
tests are negative, there is nothing to worry. You can wait for your periods for one week more.
I hope this information has been both informative and helpful for you. You can consult me again directly through my profile URL http://bit.ly/Dr-Rakhi-Tayal