4 days late & Negative tests 😢

My cycle is usually pretty spot on and I’m never late. My fiancé and I had sex around the time of ovulation. I’m 4 days late with my period which is rare for me. I tested today with 1st pee and test was negative. This was the 5th negative test.

I first tested on the day my period was due and test was negative. I tested 2 days after that was also negative, and also had a test done at the dr the same day but in the afternoon. Then I tested last night was negative.

Is it possible I can be pregnant with negative results? I’m just getting so frustrated knowing I’m late and testing negative 😔