Please tell me you've had that checked out by a doctor, and you have an explanation for said bleeding. There is simply nothing normal about it, and can be an indicator of several problems. (not the least of which is thyroid disorders, which if left untreated can be fatal)
But I think this is the kick that's going to lead me to a doc. As I said to ariomness, my cycle's never been 'normal' and while it's more of a day-to-day annoyance, I think I'll have to take in the bigger picture and realise this has been going on for the last calendar month. And that's really not right.