So, I'm 5 days late, usually just like clock work. When should I start worrying? We're always VERY careful and I can't think of any time we weren't, especially not recently! I'm supposed to be starting the pill the first Sunday of this cycle, so was hoping to be early, and start a week early, but obviously that's not happening! Breasts are tender, like they usually are the week before my period, and I've felt crampy and gotten my hopes up off and on the last few days, but that's it.