COULD I BE PREGNANT?! HELP PLEASE! NOW!

Hi- my boyfriend and I had sex two times this month. By last period was on July 22nd and I have 28-30 day cycles. I'm freaking out! We used a condom BOTH times and his penis DID NOT come near me until one was on. I am very scared of precum though!! What if there was some on fingers?! Condom?! Help!!! Happened on 30th of July and 7th of August.