Yes, with my last pregnancy, I started testing at 9 dpo and got negative, then 10 with another negative and low and behold I got a faint postive at 11 dpo!! I thought that was amazing, especially since I had just tested the day before and NOTHING, not even a hint of a line!! Good luck to you!!! I hope this our month!! Lots of Baby Dust to you!!
I would like to point out that even though pregnancy tests rate their accuracy by how many days before your missed period...it isn't always that accurate with everyone. Each pregnancy produces different levels of HCG. If you are producing higher than average HCG it could pick up sooner or if they are lower it wuold take longer to pick up a positive. Waiting to see if you miss your period is probably the best thing to do.
Here is a link to a website with sensitivity information on the various HPT's
http://www.peeonastick.com/hpts.html
There's also other useful information on that website.
wait till your missed period and test using first morning urine, its way more accurate by then.
This is what my EPT says:
-4 days before your missed period: 53% accurate
-3 days before your missed period: 74% accurate
-2 days before your missed period: 84% accurate
-1 day before your missed period: 87% accurate
The first day of your missed period 99% accurate.
I'd wait until your period is due and take another test. Some people have gotten pos tests that early but others didn't show pos until atleast 10-12 dpo. Good luck.