NEED ANSWERS ASAP

So I hooked up with this guy about a month ago, we used protection, he pulled out even with the condom on, and I got my period the next day. Then about a few days after my period we had sex again and we used protection. I'm always always always nervous I'm pregnant everytime I have sex no matter what. I'm supposed to get my period on Thursday ( it's currently Sunday ). I've had my normal symptoms - tired, tender boobs, etc. Could I possibly be pregnant? I've asked a bunch of people and they said the chance is VERY slim, but I just wanted to know what you guys thought! No, I'm not on the pill.