What is going on?

I can't stand this.  I am now 4 or 5 days late on my period.  I am generally incredibly regular and I don't know what is going on.  Of course, I POAS, on day 1 and it was negative. 

But the sticks were expired, so maybe they don't really work, and just because the control line was perfect and dark doesn't mean anything, right? 

So I went to the store again last night and bought another pack.  I figured I would wait until today, in case I began to spot, but nothing again this morning, so I peed on another stick. 

This one, just like the last, was a BFN.  Nothing, and these aren't expired, nor was there even the pink window that might confuse the subject for a minute.  Less than nothing.

So now I am certain that I am not pregnant but I am still not bleeding.  We are not going to be able to do this cycle anyway because we are at a new place and we need to go through their 'routine', but when will we be able to move forward?  This is so frustrating, but also I just don't know what is going on with my body.  Is this a sign of something wrong? 

Since my last cycle was such a crazy disaster, and the clomid challenge was a bit of a failure, maybe there is some developing problem. 

I don't even know how to ask dr google for the answer to this question.  It is possible that this is stress-related, since the lay-off, but I don't really think so.  I don't really feel stressed out or anything.  It just feels like this isn't even the right week.  It feels like a normal mid-month day.  This is all so confusing.