I got a faint positive at 11 dpo on an accuclear test but I knew it was positive , at 14 dpo i got a bfp on an answer test and 2 days later the positive line was darker and fatter . good luck
if your not 100% sure when to test its always better to try and wait until the day a/f is due or at least 2 days before. That way you have a better chance of a BFP if you are pregnant, than a BFN by testing too early and making you doubt yourself that your actually not when you may still be. Its really really hard not to give in but it will defo save you money on HPTS and make you relax more and less stressed about thinking am i arent i am i arent i... lol. If you are experiencing early symptons of pregnancy that is always a postive sign too even if u do get a BFN by testing too early. Good luck. x