Help, letrozole question

Madison • mommy to a sweet boy & precious girl 💙♥️

So I called my doctor and said I was starting my cycle. Today is day 2, and all of a sudden my period seems to have stopped. I’m suppose to start my dose tomorrow, on days 3-7. Now just it’s the weekend I can’t get a hold of her. Do I take the dose tomorrow anyway even if my period stopped? Or do I wait til Monday to call her?