Sorry, I now this sort of thing has been posted in here before. I am trying to work out whether today or yesterday is CD1 for me.
2 days a go I had a bit of blood stained CM, then yesterday I started bleeding - red and fresh, not brown or dark old blood - around 11am (enough to require tampons) My flow is heavier today, with some lovely clots etc coming through - so clearly my AF is in full flight (Hooray)

So my question is (as I am on Clomid and need to work out when to start taking this cycle)...is today or yesterday day 1???