Question - Help!

Maddie
I'm starting Femara CD 3-7. AF showed this morning very light & is heavier by evening. Today I'm assuming would be considered CD1. However, I am supposed to go have hormone testing done CD3 before I take the Femara. Now CD3 will be a Sunday & my doctor told me to come in on Monday for the testing. I forgot to ask what about starting the Femara & haven't heard back from my doctor again.. SO should I wait to take my Femara Monday even though that'll technically be CD4? Since I was instructed not to take it before hormone testing? Thanks ladies!