So I took a test this morning to see (still thinking it's too early). Nothing came up in the Pregnant window and the Not Pregnant window line wasn't even fully developed. It was only a quarter of the way done. I am sure I used enough urine. It makes me wonder though because I bought a three pack if the others had issues as well. Should I buy a new test for tomorrow morning?

Based off my estimated period for last month it says the I am 9 DPO. And the App says I should wait until Friday to test. Thoughts? Advice?