Please help..

Kerri all this time I've been using Glow, all you ladies say how great frer is. I've used them a few times this time and they're not totally working for me..all my tests are progressing but that 1 isn't..I'm gonna post pictures and please let me know if I'm just buggin. 
​Thank you  
Maybe I got a faulty box bc I got this ^^ negative last night.. And 1pos last night and the other pos this morning. I feel like they should be darkening bc my other ones are.. I've even taken digital and they're positive. Maybe I'm just scared bc i miscarried recently. 
​Thank you in advance