Period due today, but BFN

Adriana

I’m supposed to get AF today and so far nothing. I usually have a day or two of spotting before AF, but haven’t had any. I’m on a 31-33 day cycle, but never later then that. I took a First Response test today and it’s negative. Starting to think I just have a late period for some reason. Anyone test the day AF was supposed to be due and got a negative, but ended up testing positive later?