Unsure about these

Nanett

I am currently 8DPO and took 2 ultra sensitive strips and 2 FRER. The strips might have a faint line but the FRER looks negative. How sensitive are the FRER? Do you think it looks promising or not? So confused. All of them are taken with FMU and pic taken within the time limit.

***Edit: new tests taken on 9DPO with FMU. 4 different types. 2 sensitive and 2 standard 25miu. All have a line today ❤️