10 days delayed period

Se

I have a regular cycles with 32days length..last lMP s 25/12/2019..i had 2.5+2.5mg of letrozole per day.. That s two tables a day..am supposed to get my periods on Jan 26 but I didn't yet..i dnt have any PMS also...40 days from LMP now..did any one had same experience with letrozole..plz help me