i also have the same dilemma now. i am 10 days delayed but when i used a pregnancy tester during the 7th day of being delayed, got 2 lines but one is kinda blurred. i checked on the 8th day and it's the same. i went to an OB and have ultrasound but saw nothing. the only thing she noticed is that my endometrium is 1.2 cm thick instead of 1 cm.. am i pregnant???
I would definitely wait another week and take another test. There are many reasons a period can be delayed.