Today I am 10dpo..on 7dpo, I had light brown spotting once when I wiped. 8dpo I had pink spotting once when I wiped. (Both of which I thought was implantation bleeding).  I have taken several different brand test which show BFN, however in a couple of them I can see a faint second line when I use a negative filter to tweak the test. I know 10dpo is still early to test but from what I've read, many women get a BFP a couple of days after suspected implantation bleeding.