Anonymous: hi. the last time i had sex was a week before my last period (i used a condom) but this month's period is late. could i be pregnant or am i just stressing myself out?
Having a period is a sign that a person is not pregnant. Not to mention, condoms are 98-percent effective with perfect use at preventing pregnancy and are highly effective at preventing the transmission of STDs. The risk of pregnancy from the situation you described is low.
If you are concerned you may want to take a pregnancy test, though. The most accurate time to take one is the day before a period is due or if it is late. Since yours is late, taking it now would be effective. You can either take one at home or in a local clinic. Find free or low-cost and confidential clinics near you here.
I hope this helps!