When is CD1?

Mikail

So ladies, I was diagnosed with pcos, so I was put on provera and clomid. I’m suppose to take clomid CD3-7. I finished my provera on Sunday. I’m cramping and I can tell that I’m starting, like I’m spotting and everything too. My question is, what do you count as CD1? Is it when the cramps and spotting start, or do you wait for your first real day of a flow? I’m just so scared to take this medicine wrong! Someone help please.