It's not too early as long as the test you're using says it detects within 10 days, which most these days are 5 or less. It could be a false negative. Morning pee has the highest levels of the hormone. If you've never been this late before, there's a good chance you are. Or it could just be that you think you are and your brain has convinced your body that you are. I would take another test in the morning, and if it's negative you're probably not pregnant. But if you continue to be late and keep getting negative results, do to the doctor and get a blood test.
Yes what she said ^
I got pregnant from no condoms (pull out method) and no birth control, so you may just be late but test again in the AM with morning pee
Its best to take it in the morning when you first get up your first potty break and I'd use the clear blue test cause they pick up the hormones faster then the dollar ones hope this helps good luck