Faint positive FRER but negative FRER digital?

This is probably dumb, but should i be waiting to take a digital until i miss my period? I am more than likely 10-11 dpo, period due in 3 days and i have 3 vvvvvvfl on frer from today, all at different times and different batches (i had to REALLY see it to believe it lol). I took a frer digital because they also say “6 days sooner” so i assumes they were the same sensitivity, but it was negative. Should i be worried or its just less sensitive and wait until my missed period? Thank y’all ❤️