Could I be pregnant?

Hey everyone, I’m just looking for some advice. I’m definitely a worrier, as many of you will probably guess. But I’m a little stressed about chances of pregnancy, I’ve been reading horror stories about people being pregnant with 0 symptoms and I think I’ve creeped myself out a little. The last time I had sex was probably April? And we used a condom and pull-out method. I’ve been having periods since then, but I’m kind of thinking - what if?

I get that this will be silly to a lot of people so I apologise if this seems annoying! But I was just wondering what other people’s thoughts are on this - could it happen?

I haven’t really had any symptoms of pregnancy other than weight gain but I’ve been extremely stressed lately so I guess it could most likely be that. Just looking for some support!