As some of you may know (hell .. I've whined about it enough) I have had weird spotting at the end of last cycle/beginning of this one. It was very light but intermittent for a couple of days and then intermittent but heavier when it appeared

When it got a bit heavier I counted it as CD1 ... making my last cycle 26 days - much shorted than the last couple of cycles.
So .. today is CD6 and the spotting is still about, still light etc etc but I was wondering that since it has become even heavier should I bring CD1 forward a little? Did I jump in with starting the new cycle too soon?
Would only change it by a couple of days (say make today CD4)
What do you girls think? Will I be totally out in the prediction of O etc if I started too soon?