How do you count days past ovulation?

Question

So I'm a little confused on where you start counting from on days.  Can anyone help out?

Answer

If you are tracking using glow. Your first dpo would be the day after the highest percentage day in your fertile week. I hope that makes sense.

Answer

Starts the day after your LH surge or positive ovulation temp

Answer

Start from the day you started your last period, usually 13-16 days you ovulate.