Scared new to sex

So my bf and I tried to have sex we both are new to this, I wasn’t fertile it was 3 days after my period ended and we tried. We used condom and he went in and it was 4 little strokes and he pulled out with the condom. We checked it for holes and it was fine. Then we tried again a couple minutes after and he pulled out with a condom it was fine. Could i be pregnant I’ve been seeing stretch marks on my stomach and I spotted during my fertile week? I have spotted before and I was fine. Am I fine?