please help ... pregnant ?

My boyfriend put his penis in me without a condom on but he took it out around 10 seconds later. He didn't cum. Iv'e been pms-ing (cramps, sore breasts, mood swings) for almost two weeks but haven't gotten my period. It's supposed to come in 2 days, but I'm still stressing because I really don't think it's going to come in 2 days. I'm really irregular. Could I be pregnant?