I doubt you are pregnant, I beleive it would be a little too late for you to be having implantation bleeding, from what ive read that is supose to be before your missed period, my guess is your stressing yourself over wanting to be pregnant that your either gonna have a late period or your something, also ive been told that if you are really deserate to be pregnant you can cause yourself to feel pregnant
but I could be, and I hope that I am, wrong, for your sake
it may be just a false negetive, either way, id wait a few days (abotu a week since you last tested) and try again if you havnt gotten your period, if its still negetive and you still dont have your period then go to your doctor and get it checked out
i really hope I am wrong and you are indeed pregnant
~alicia~