Worried For Nothing?

So... I have extremely bad anxiety and am now scared that I'm going to get pregnant. Super crazy, right? Okay so, last day of my period so I just stopped bleeding, day 6 of my cycle that has been late (from the last one, it took 41 days). He doesn't use condoms, I'm not on birth control, so withdrawal method was the way we went for just that moment...And I keep reading different articles giving me different answers. Can anyone reassure me I'm seriously overreacting for no reason? It would be greatly apprecaited. I don't regret it, I'm just worried.