I was wondering if I was pregnant, but the test came up negitive, I have also been having really bad headaches, and I bled a little bit last night. I still haven't had my period, i'm like 4 days late. Could this of been implantation bleeding? I have also been throwing up everytime I drink or eat something, is this a sign of pregnancy? I do have another child he is 2 and I didn't have any signs with him and I am very confused from what the pregnancy test said. How long should I wait to retake the test? Or should I just got straight to my dr?