Thanks for writing to us.
After taking Primolut-N for three days, you need to wait for at least 4-5 days for your periods to begin normally. Right now it is too early to panic. Pregnancy
is ruled out since the test is negative. Please do not worry.
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