What day counts as CD1?

Question

I’m curious as I am not sure which day to mark as my CD1 (trying to track my short LP accurately). Thanks!

Answer

Day of flow starting is CD1 I'm pretty sure. So example, the 8th was my CD1 today is CD15 for me. Hope that helps.

Answer

I’m pretty sure I read somewhere what if it’s normal for you to have spotting or light brown/pink in the beginning of your cycle, that should be counted as your CD1. If it’s not a normal thing during your cycle then the first day would be considered a heavy red flow.

Answer

I just had to ask my doctor this. I started my period at 10:30 at night and she said the following day would be CD1 since I started so late in the day.

What day counts as CD1?

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