<human>: My boyfriend and I have been together for a year and a few months. and there isn't much wrong with me and him but my emotional state lately has me really worried, not only about what it's doing to our relationship, which I have talked to him about, but about what it could mean.

Lately I have been extremely stressed and moody. I have had a lot of school work and I started working with a manager that doesn't like me at all. So for a few weeks I let it up to that. It didn't phase me much but I was still worried about Mark, my boyfriend.

I talked to him a couple times and he assured me it was alright. He's been under a lot of stress too so we've been helping each other but then he asked me if I got my period. That's when I realized I was a week late. I am irregular so I let it go but now its been three weeks going on four and I'm scared.

I know I'm a dumb teenager so you don't have to point that out, we used a condom and spermicide that we made sure was ok to use with condoms but I need to tell someone and I need advice. I don't know if im over thinking or how I should tell my boyfriend. He's really understanding but im worried.

Can you provide a brief overview of the text?
<bot>: I've been acting moody and I've been in an "off" mood for about a month now and I think I might be pregnant. Someone help if you can.