Negative test, no period, WTF!?

[RDR]

I'm about two weeks late for my period. I've felt cramps off and on and my back hurts and normally if that happens my period comes the next day but it hasn't. I've taken 2 ept and 1 first response....All came out negative.

What is going on?
I'm not underweight.

 

[Angelina]

stressing about it may cause your period to delay, try to cool off and not think about it as much ..

 

[Soyjoy]

are you underweight? if you don't weigh enough your body can't menstruate. that's the only thing i can think of off the top of my head.