Help with hpt test result?

so i have already taken 4 test that were negative but however i am not late yet . im not due until the 26th. I have been having symptoms though like , nausea on and off through out the day, headaches, sleeping very late which i never do, the blue veins in my breast my nipples are hard all the time but not sore or sensitive, cramps mostly in my lower back and dull ones in my stomach on the sides. i spotted a light pink on tp when i wiped about two weeks ago for three days but it wasnt everytime i pottied . so i was going to just wait and test on the 27th if i hadn't started by then. well i was so nauseated yesterday i just knew i would get a positive so i took my last test. when i peed on it i could see the urine moving through the test (answer brand) as it moved through i saw the first pink line then the control lined came up next but then the first line just went away what does that mean ?