Keep waiting. It’s either a few days late or its too early to take the test
It could be too early or it could be late for another reason. When I was pregnant, I got very sick one night and took a test to see if I could be pregnant and it was negative. I took a test a week later and it was instantly positive. So it definitely could be too early!
wait until a month and take a test in that month depending if your period it balanced or not.
I’d just wait a few days. Mine are super regular but I am sometimes off by a few days once in a blue moon