Has anyone ever had this ?

On the first of the month I took a pg test with first morning urine . There was a very very faint line. I figured it was an evap line so I did some research and it turned out not to be because mine had color . So yesterday I ent and bought more test and tested right when I got home . There was no line starch white , I figure okay maybe because I didn't use fmu this time . So I wait until this morning to test again . I wake up and I test with fmu and then again no line ... I'll post my calender ? I'm so confused has anyone had this before m I pregnant ? I'm not late on my period neither

Here's glows calender

Here's ovias calender .

As you can see they have 2 totally different fertile windows and period prediction dates