Femara changing length of cycle?

hey guys! so I think my PCOS cycle is not as common so I'm not sure how to react. my cycles are VERY short, like 9-14 days only. so I was getting a period every other week.

so I took my first round of Femara this month. ovulated on the 4th, and now we're here, and it's cycle day 18...and AF has yet to show or even make me think she's coming.

does anyone know if Femara makes cycles more normal, on top of helping to ovulate? I have taken pregnancy tests the last couple days and all have been negative..I think. my CM is thick white and creamy. Today is 9dpo, so it's early, but normally my period should have been here by now. idk, any insight would be helpful!