I know its hard, but I would it out a bit longer. I wouldn't test before 12dpo. Good Luck!
The earliest people say to take it is 10 days after ovulation. You could start at 7 but you may be wasting your money. It is hard to wait it out but if you can then it's always best! I got a very questionable faint line at 10 and 11dpo and it was a lot more prominent as time went by! Hope this helps!