Probably you are not pregnant, chances are much higher for the answer: not pregnant. However, there is no way for me to give you an exact answer, because forgetting to take the contraceptive, especially at the beginning or end of the chart, can lead the woman to have an ovulation and having unprotected sexual intercourse can become pregnant. If your menstrual period falls normally, you will hardly be pregnant, but if the menstruation comes different or does not come, there are chances of you being pregnant. Now just wait to see what happened, what was done, was done, you already forgot to take the tablet, you already had the relationship without protection, there is nothing you can do now. What was to happen, if it happened, has already happened.
Just need to be more careful going forward, forgot to take the tablet, have no relation or use a condom, otherwise there may always be a chance of a pregnancy.