Me and my boyfriend had sex about a week ago and the condom slipped off when he pulled out to come. He didn't come near my vagina or any place that could've touched my vagina. But then a couple days after that we had sex without a condom but he didn't come at all. I've been very stressed lately and now I'm more stressed because my period hasn't arrived yet. I'm still in my teens so my period is irregular sometimes and likes to take its time. I've also been having cramps but they aren't as bad as they usually are. I'm just worried is it stress or pregnancy?