Luteal phase with letrozole

Can leteozole lengthen the luteal phase? I was prescribed letrozole to "strengthen" ovulation. I usually have about a 10 day lp. I'm 10dpo today and on the edge of my seat waiting 😂 But I am waiting till 12 dpo to test as instructed by my clinic, if AF hasnt shown. This whole luteal phase has been different to my usual and its mt first cycle with letrozole so I really dont know what to expect.