Before I learned of my pregnancy I was experiencing breast tenderness, and then they plumped up (as they usually do right before I go on). I began to notice that the pigmentation would get darker at random times, but then lighten entirely. When I looked closely I saw a purple/red ring around my nipples which I had never seen before. When I saw my reflection as I stepped out of the shower I felt mild shock at how much larger they appeared! My breasts began to feel firm, yet fatter than usual. Also, I found sleeping to be uncomfortable, and when my partner hugged and picked me up I almost cried... all of this happened before I tested. I am now almost 5 weeks. I was not planning on this pregnancy so all of these changes definitely rang a few bells!