Am I prego with a lego?
This one is easy. period = not pregnant.
Actually, the closer you get to your period, the HARDER it is to get pregnant since the egg dies about 12 days BEFORE the period and another egg won't arrive until several days AFTER the period. Pregnancy is extremely unlikely. You can test when it has been at least three weeks after sex or when you are late for the next period.
You're not pregnant with anything.
It is NOT easier to get pregnant closer to your period. Your best chances of pregnancy are generally around two weeks after your previous period, meaning two weeks before you start your next one. The specific days will vary based on your cycle length, but by the time you're three days away from getting your period, chances of pregnancy are basically nonexistent, because your egg has already been released and died. If you've gotten your period--lighter than usual or not--you are not pregnant.