Hi.. So, here's the deal, my last period was the 7th of october, and af still hasn't shown her ugly head yet! I had (what I thought was) implantation bleeding, only a few spots of light pink blood on my pad, lasted 2-3 days.. Did a test on my expected af day, neg.. Did one a week later, the same.. Went to see my dr, he advised me to test every week till my next period was due, and still neg! If I am, I should be gone nine weeks! My nipples are bigger, and darker. Gone up a cup size, back and shoulder blade pain, constantly tired, moody and sicky feeling!! HELP? Am I going crazy, or could I really still be pregnant?