Letrozole and Intercourse

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So I’m currently going to start treatment. I’m doing the Letrozole, the injection and Progesterone. I have a question which might be dumb cause I’m sure every Dr is different. But i got my progesterone and Injection in the mail already. But never got the script for the Letrozole. Did any of you not get the scrip until your actually supposed to start it? I go for Baseline ultrasound on Sunday. I’m definitely going to ask then but just wanted to see what everyone else did.