Starting letrozole ? Help!

Mikhaila

I am getting ready to take letrozole for the first time and struggling to decide when to take it. I had to take progesterone to induce a cycle and have been spotting for three days now. Do I count the spotting and count today as day 3 of my cycle and take my first pill? Or wait until I have a full flow for three days ? Im nervous that the full flow won’t come 😬