There is a reason why I've posted anonymously because it will probably sound silly and some not all some women on here aren't the nicest when certain questions they find childish or obvious.

That being said I would like to know how this DPO works.

I've seen ladies write dpo9 tested for pregnancy.

My question is what day do I start counting my DPO from? I got a peak (Clear Blue digital dual hormone) on Xmas day and the next on the 27th it was low.

Thank you for reading and good luck to everyone.