Hello, Welcome to HCM, I am Dr. Das
Look, the nordette
pill taken after 4 days of first intercourse will not help in contraception
. It has to be taken within 72 hours of unprotected intercourse
When this pill is taken after 4 days, it may lead to many complication. You should have taken an opinion of a doctor.
Now, just wait for your next period. If you miss it, then you have to do a home pregnancy
test on or after the day of missed period.
The next step should be determined depending upon the test.
Hope this will be helpful.