Wishing AF would just come and go quickly.

Although I thought along with others that I could be pregnant, I no longer have that hope. I thought I had implantation bleeding about a week ago and now I have had a backache just about everyday, my boobs feel full and heavy and are tender, I seem to pee more than usual, which I pee a lot as is, and now experiencing cramping off and on which only once had it felt possibly like pms cramps. My period was first suppose to be on the 6th and then glow moved it to the 9th. The past two months it came on the 5th or 6th though. So I decided to test and bfn so far. :/ About to give up.