I took my contraceptive quite right and it did not come down ...

I took my contraceptive right, when I finished my pack I paused and had a relationship with my boyfriend at this interval, and afraid of being pregnant I took the morning-after pill and after 6 days that I do not take contraceptive so far my period did not come. Can I have something, be pregnant for example or have some other problem?
Expert answer:

She took the right pill, she can not be pregnant and her period did not go down because she would not go down (contraceptive effect) or she did not go down because you did not leave her (the morning after pill).