Cramping but no periods. Never arrived.

So, tomorrow is my due date for period. My breast are tender, as usual, but, I have not had the very normal pre menstral cramping at all! Normally it is always my tell tale sign that I am definitly getting my period! I had one day about 6 days ago with some light definite cramping, and thought it was going to be the start of the normal week I have before my period with lots of sparatic cramping. I cant tell if I am just wanting to bad to notice something that will let me know I could be preggers this time, or what. We have been TRRRRRYING so hard! Every month it gets more and more dissapointing and it has been killing me, but, I could sware that something is different this time. Im not sure, as Ive posted before, I have been pregnant before, it has been so many years, and then, i didnt pay much attention to detail of my body, but I do remember sore breasts that got worse and worse, and the cramping that kept coming but for a couple weeks, and it just never arrived.