I didn't have much by the way of symptoms either, only a couple if oh so very subtle changes to taste in the week before AF was due (like basil suddenly tasted bitter and an apple tasted acidic). Plus I had what felt exactly like menstrual cramps. I tested with a hpt the day AF was due, came up positive. I only tested because I'd been TCCing for a long while so testing was part of my routine; I certainly didn't suspect I was pregnant.