pregnant?

I lost my virginity on September 14th. My last period was September 6. I'm expecting my period tomorrow. Is there any way I could be pregnant? We used a condom and it didn't break & he pulled out before he came. I'm not on any BC. I've just been freaking out because every PMS Symptom I've had (fatigue, sore nipples, cramping), I've linked to pregnancy. I think I'm just freaking out because it was my first time. So what's the likelihood of me being pregnant under these circumstances?