Ovulation seems off this month

I’ll be going through my first IUI next month and I’ve been using the Clearblue advanced opk and for the past three cycles just to track. On the last 2 cycles I got a “peak smiley” on day 12 and then day 11 the next cycle. I missed the “high blinking smiley” both cycles, which was fine because with IUI I am looking for the “peak” day anyway.

This cycle, I’ve had the “high blinking smiley” for 4 days straight, days 11-14, and have yet to see the peak, but Glow is still telling me that today is my ovulation day.

Is it weird that my cycle seems so off/different than it has in previous months? Also, shouldn’t Glow be updating and moving my ovulation date if I haven’t had the “peak” reading yet??

Still fairly new to this, so any help is appreciated!!! I did have strep throat at the beginning of the month, but I read that antibiotics don’t really affect ovulation/fertility.