Sorry I cant be of any help, but really feeling for you, all I can do is cross everything and hope for you!
I have heard of implantation bleeding happening to alot of women, so it wouldnt be that unusual. Doesnt it suck that the symptoms for pg are virtually the same for AF? Im in the same boat, feeling off my food, weird tastes to everything, terribly tired, and kinda cranky, and peeing more often. Try not to get your hopes up but you just never know kind of thing.
Babydust...Wish you all the best, sorry again I cant be of much help!