Unprotected sex... ?

Check the phone book for a gynecologist if you don't have one already, and make an appointment.

As the other Anonymous user said, if you don't already know your cycle, then figure out what it is, and see if you're at the time where you can get pregnant. If you're at that point, it's more important than ever to get checked out by the doctor.

You also might want to get blood tests taken if you don't know your boyfriends history, and likewise, he might consider doing the same if you've both had multiple partners before you two met. Again, tests as early as possible can help minimize or ward off certain issues before they become bigger problems.

No. You need the morning after pill, that's all you can do.

you just need a gynecologist and a pharmacy. That should be around?
Otherwise, you can check if you are in the safe phase of your cycle.
Or you take the risk and might get pregnant then.