Negative on digital

Jenny • My beautiful son Devon was born 14/10/2016, baby number 2 due Feb 2020 ❤️
So I've now done 4 of the below tests. All showing positive and below is the darkest they have gotten so far. Got a digital today and it showed BFN. I have done another cheap one since and had the below positive. Is it fair to say I am pregnant and it's just too early for digital? AF was due yesterday according to Glow but as this is my first full cycle since coming off the pill, it was a guess at cycle length as I can't remember what I was like before the pill. I will keep testing every day and try a digital again next week but all comments welcome, especially from anyone who had this happen to them :)