14 and pregnant?

So I know I'm going to get a lot of hate for this because I'm young but I need some advice. (Btw I'm 14) So on Saturday me and my boyfriend had sex. It was both of our first times. He did put A condom on in the beginning but I guess at some point he took it off. I didn't realize till the end when he came on me. He pulled out pretty early, he had to jack off at the end in order to actually cum. None of it got in or on my vagina, just my stomach. Also, I wasn't in my fertility window, <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> said my pregnancy possibility was like 7%. I'm not supposed to get my period till the 30th, but what do you think the chances of me being pregnant are? 
UPDATE: So, I took a test yesterday, but it came back invalid and I wasn't able to get another. My period is supposed to come tomorrow, but a lot of times my period comes early and it hasn't. Could this be because of how much I've been stressing this month? I'm starting to actually freak out. My mom does know about this, but it's awkward to talk about. Plus, I don't want her to worry that I'm pregnant if I'm not. I told her we used a condom, so she would know something's up if I'm freaking out this much. If I don't get my period tomorrow should I be extremely worried? 
UPDATE: I got my period on the 4th although my mom does think it was a miscarriage. But thanks for all the help!