How accurate is First Response?!

I just want to make sure I’m not tripping but I posted a few days ago that I tested on 10 dpo with ClearBlue Rapid Detection & got a negative. Now today is the day my period is suppose to start according to Glow & I’m 14 dpo & I literally just got a BFP 🙈 so I just want to make sure before I get any excitement that First Response Early Results is accurate, anyone?!

I will test again at the end of the week to make sure but this my results 😩🥺🥰