Could I be pregnant?

I'm 18 and my boyfriend and I always use condoms. At the end he always checks to see if there's a break or tear, but there never has been. My period was due today but I haven't gotten it yet, and normally my period comes a couple days before <a href="">Eve</a> says.....  I have sore boobs and mood swings, the usual around my period. But in also getting like little burts of cramps here and there that only last 5 seconds, and they kinda feel like period cramps. Idk I'm really scared, like we're always safe and they've never broken, is there a huge chance I'm pregnant ? I've been talking to my boyfriend and he thinks I'm worrying for nothing