Anxiety

So I lost my virginity on Sunday so about 6 days ago, the day after I just felt nauseous but never puked and we used a condom and we had sex for maybe 1 minute! But I don't think he even came because I gave him a blow job right after and he came then! But now I'm constipated and my stomach hurts! Am i pregnant? Or is it just my anxiety getting the best of me thanks!