Af due either 9/11 or 9/12

Either late or supposed to start today my cycles are between 29 and 30 days ... Some apps I have say different ovia says af was yesterday glow and my period calender say today but no cramping or any of my usual signs i usually get of her showing up i am really thirsty go to the bathroom alot very tired very hungry I took a test Thursday night could it have just been to early then because it was a BFN TIA ladies and baby dust to all of yal