I was wondering if this could mean i'm pregnant...

I had unprotected sex with my boyfriend about a week, then again two weeks, after my period ended. My period is in about four or five days, on the 3erd or 4th of june (i never know exactly when, it's usually a day or two "late" or early) but i've been getting cramps this week and a couple days the week before, even though I never get them, not even around or on my period. I've been feeling really fatigued lately too :? And even though i've been eating a lot, I haven't gained any weight. I've actually lost about two pounds 0.O that might have nothing to do with it.
Anyway, i'm just pretty curious, even though I will know in a few days. *worried*