pregnancy scare

Me and my boyfriend practice safe sex with a condom, but before he puts the condom on sometimes he'll stick his penis in me and go for like 2-3 strokes. Then he puts the condom on and we continue and finish having sex. Is that enough to get pregnant? I'm 5 days late but I have experienced no symptoms. As usual I broke out and got sad a week before my period, but my boobs weren't sore and I haven't had any cramps at all. My friends tell me my period might be delayed from all the stress I've been putting on myself. Please help me, thanks.