My period was due on Sunday, and never came. So I took a test yesterday, and got a BFN. However, I remembered that on Friday I had the tiniest little spot of blood when I went to the bathroom. So I'm thinking that the little spot was implantation bleeding, and everywhere I look online it says hcg level aren't high enough until 7-10 days after implantation for it to be BFP on a urine test.
You should wait 2 days and test again, and if you get another BFN, contact your doctor for a blood test.
Best of luck! Let us know how everything works out
It could just be too early to test. I tested the day AF was due and got BFN, but re tested again 2 days later got a BFP. Of course, it's also possible it's negative because you're not pregnant. Many things can delay a period, not just pregnant. Give it 5-7 days and if still no period then re test, with first morning urine and you should get a definite answer then. Good Luck.
The best advice I was given is put the tests away. Only test when you strongly believe your pregnant. it may be too soon to tell. See what happens and test again next week.