[Becaxx]

I may be worried for no reason, but I figured I'd ask anyway. My boyfriend and I have been together for over a year now, and we only just recently became sexually active. For the last few months my periods have been normal and regular, but this one seems to be late. I was supposed to have it on the 10th of August, but it's been over a week now, and still no period. The thing is, when my boyfriend and I had sex, which was 3 or so times after July 10th, we used a condom every single time, but he never came in them. I'm kind of picky about that being 16 and in school, so yeah. Right now I have tender breasts which have been that way for about a week and a half (a normal symptom of my period about to begin), and a slight cramping or tightness in my tummy (it feels like it normally would when I'm about to have my period, except I only feel like that when I'm standing up). Oh and I believe a week or so ago that I was eating quite a smaller amount for about two days because I was attempting to diet, but you know how that goes. I mean now that I type all this out, it seems a bit odd to be asking this, because it pretty much seems like I'm not pregnant, but still, I'm worried. It's just that this late period comes right after having sex about 3 weeks before my period was due. My main question is: Am I just being paranoid, or should I go ahead and get a pregnancy test? Any input is much appreciated.