What do I do next?

Hi everyone.

I'm a newbie. 34, engaged (wedding date: 4-27-13)

My period is late.

I typically have my period on day 26-27, and never later than day 29.

Today is day 34, still nothing. POAS on day 32 = BFN

I was expecting AF last Friday (8-31), Saturday morning (9-1) I woke up with horrible cramps. Like I've never experienced before, had me doubled over. They finally subsided mid day but no AF.

My only other symptom is sore boobs, even today they are still tender but they were really bad last Sunday (9-2, day after bad cramps) I typically get cramps during AF but nothing this strong. I have had some lower back pain but nothing consistant.

What do I do next? Take another home PG test? When? If still BFN, when should I contact my gyn?

A little history, we use condoms for BC, however we tend to have intercourse w/out one, he pulls out before he *ahem .. and then puts one on and we finish.  We are not dumb, we know this could lead to pregnancy.  Its not a big deal to us whether we are or are not pregnant, I'm just not sure what to do next. Also over all I'm pretty healthy but I am over weight. (5'11" 250lbs, however I've been this weight a while so IDK if this would cause AF to be MIA)

TIA!