I Need Advice Plsss!

So AF was scheduled to come this past Friday, it did not, just some barely light, almost not even there spotting then that stopped Saturday, came back yesterday and I’ve had nothing since. I took a test today and got a BFN. I know my body and I don’t feel like this is AF nor do I think I’m getting it anytime soon. Could I still be pregnant and there just not be enough hormones yet to get a positive result??