Letrizole with no trigger

I took letrozole 5mg from days 3-5, and had my ultrasound today, they said I was ready. I was supposed to do a trigger shot today followed by IUI, but for genetic testing reasons my iui was cancelled, so not doing the trigger. Will I still ovulate without the trigger? This was my first time on letrozole. I normally ovulate on my own around cd 16/17.