So my friend decided to wake me in a panic and I thought something really bad happened, she says…

So my friend decided to wake me in a panic and I thought something really bad happened, she says that she and her "friend" had sex last night and he forgot to put on a condom, she's on the pill and took the last active pill for this month hours before she had sex. Technically she's been on the pill for over a year but during mid October she forgot to start the new package after her period but once her period ended last month she started the package she just finished today. What are the chances of her getting pregnant? please help me explain she should be fine.