Beginning around, oh I dunno, the DAY after ovulation, I miraculously start to "feel" different. Are my boobs bigger?  A little sore?  I have a headache and I'm tired... can't possibly be from a high stress job, it MUST be pregnancy!!  I generally hold off taking a test until at least 6 DPO, but of course, it's always negative. I'm now 8 DPO, and seriously...  SO tired!  Irritable. Headache with hot flashes. I just KNOW I'm pregnant and this couldn't possibly be a cold, overwork, pre-PMS or any of the other hundreds of more plausible culprits!!!  So why won't that little stick just TELL ME?!??!