After we had sex,I took 1st OC pill.The 2nd one is to take at 12hour after 1st one.But I took the 2nd one at 12:45 after 1st one.I delay to take the 2nd one for about 45min.Can I pregnant

It is possible, but not due to being 45 minutes late on the second pill. The emergency contraceptive pills help lessen the chance of pregnancy, but pregnancy can still happen. More than likely all will be well, but you will need to wait and see what happens when your period is due.

You may have some bleeding begin in the next several days that can last for awhile. It is also possible that your period will be off from its norm the first cycle as well.