So heartbroken! :/

Has anyone had faint lines n then days later negatives? I had what I thought was implantation bleeding on 10 dpo, n AF never showed, she was due 10/30. I had faint lines the 31st through the 2nd, then on the 3rd till yesterday all negatives. When I did have faint lines before it as on a ept, dollar tree, frer, and target brand. What does it mean? I'm just so sad n I really thought I was pregnant especially having all the symptoms. :( not able to see dr till Monday.