I wanted to canvass some opinions, please. I am on CD25, 12 dpo. My cycle is usually about 26-28 days. Today I have some brown spotting, which I had at the same time when I was pg with ds five years' ago and which was implantation bleeding. I'm in two minds about testing. This could be AF coming early (always starts off slow like this for about 2 days) or it could be implantation bleeding. If it's implantation, would it be too early to test?