I'd say that looks like a faint positive, but take a few more over the next few days, and try first pee of the morning as tends to be the strongest. If you go frequently during the night, try and do it on your longer lasting pee if that makes sense (I had to take mine at 4am as I knew after that I would be peeing every hour lol) Evap lines tend to be a bit more smudgy. Having said that, 10-15 mins is a while,so check instructions from the pack as some say not to read result after X amount of time. It's one of those things that only time will tell for sure! Good luck and hope it is a positive for you X