My period is running late (like a week), and today I started having pre-period symptoms. My period is irregular occasionally, I've skipped a period before about 2 years ago, and it's not always on time. I've also been going through a lot of stress and this is treading me out even more. This is where the pregnancy question confuses me. Last time I had sex was over a month ago, like around a month and a half. So does that mean I'm not pregnant? Or could I still be pregnant? I haven't been throwing up or nauseas. But I'm still worried.

Anytime you have sex, you can become pregnant.

Did you have a period, after you had sex ?

Stress can cause periods to be late, even if normally regular and you stated yours are not regular.

Sounds more like a late period, if no period in about one more week, try a pregnancy test