Late??

Kayla
I'm a couple days late now, 18 and just started college so I haven't been sleeping much.  My BF and I had sex but with a condom (no breaks/slips) and also we didn't have sex on my "fertile days". .  I have felt no pregnancy symptoms, only my normal run of the mill period cramps. We also had sex the day before my period and I bled red (fresh blood).  My BF is freaking the hell out, but I'm pretty calm, I tell him it's gonna come.  Does anyone think I should be nervous?