Hello,

I am two days late and I am worried that I am pregnant, even though the chance is probably very small. My boyfriend and I are both virgins but we fool around a lot, and a couple times recently he put the tip of his penis against or partially in my vagina, but he had boxer-briefs on. Also once or twice recently he's been naked but I've kept my underwear on. Should I be worried?

I have also heard that stress can delay the onset of a period, and I have been very upset lately because I had a big fight with my mom, I had final exams last week, and I've been arguing with my boyfriend a lot. My periods are fairly regular but it's not unheard of for me to be a week late or skip a month and be fine. Lately, though, I've been coming right on time.

Thanks! Please respond promptly.