Femara making period stick around?

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This is my 1st round of Femara, been trying for over a year. My OB has me taking it CD 3-7. Usually I have some light spotting day 6 then period stops. Today is day 7 and I’ve got bright red light flow suddenly. Did Femara make anyone else’s period stick around longer?

I guess I’m worried about it messing up my chances for conceiving this month somehow because that would be my luck.

Additionally I haven’t been told I have PCOS or really any reason for our infertility. We’re still waiting on sperm analysis results though 🙄