When should I test again?

Pam

I tested when I was two days late w/fmu, -, and then I did a FRER at 8 days late done in pm, there was a vvvvfl on the 8 day late, but I didn't notice it until about an hour later, then I did a FRER with FMU at 9 days late, and it was negative. I've had sore boobs and I'm extremely tired. When should I test again?