The earliest I got a positive was 10dpo, and it was still very faint, I implanted 8dpo, I got pretty bad period like cramps for an hour or so, and then from implantation it can take 3-5 days to show positive on a HPT. I've heard of people getting them 9dpo, but I think 10dpo is probably the earliest (with an early response test) that I'd do it, just so there's no questioning it.
I m also 8dpo I m going to walmart sat, and test on Mon since its my gf birthday thought it would be a nice present if it comes out positive :) Good Luck!
I ovulated on the 8th of August and got my positive on the 22nd. So it was 14 days for me.
I was a day late when I got mine and a week before I took a test at the hospital and it was negative then the day before I was supposed to get it it was also negitive