What is the soonest you have started testing?

Autumn

This waiting game is horrible which I know you all know very well! I have had pink that’s now brown discharge today and yesterday I’m 6 dpo and tomorrow I will be 8 days out from my period is tomorrow morning too early to test with an early first response? I want to test so bad but I also don’t want to waste one if there is not even a chance that it could show something ughhh help!!