I has unprotected sex with my girlfriend on 31st August. She had taken an emergency pill within 3 hours, but still perion has not com.is she pregnant?

The morning after pill may delay her next period, it depends on where she is in her current cycle when the pill is taken. High amounts of stress can also delay a period by many days. The damage is done, so the best thing you can do is wait for her period to arrive and if it doesn't have her take a pregnancy test with first morning urine. If she doesn't get her period in a months time, It would be safe to say she's missed it.

There is no way for us to answer this. She has to wait until 1-2 weeks past her missed period to take a pregnancy test.

As you well know no birth control is 100 percent, so of course she could be pregnant.

The morning after pill can cause her to miss a period or be late, so it could be either.

You need to wait about 10 to 14 days from the period due date and do a pregnancy test, the very first thing of the morning using the first urine of the day