BBT chart/AF

Good morning!

My husband and I have been seeing a fertility doctor for a bit now and this month we just recently did IUI (our second one so far this year)

Ps..with no infertility issues.

The ultrasound showed my egg wasn’t mature yet so they pushed back my IUI day and said to take my trigger shit later than usual, if I don’t already test positive on my opk on my own.

Well AF was supposed to start tomorrow but now since I put in my IUI and trigger shot in, my bbt chart is showing I should start Monday (which is CD31 which is very off for me, I average CD27-28) my question is, does pushing off a little later trigger shot to start ovulation (mind you only two days later than usual) push back my period as well?