I don't know what is going on!!

Mary

I am currently 6 days late. I have never EVER been late. I have taken 5 tests (red dye of course) and all came back negative, no vvvfl or anything. I am having light cramps on and off, headaches, some egg white like discharge, zero bleeding and I have been extremely tired and there has been no change in my schedule to make me more tired. We had sex on August 7 and 9 which was inside my fertile window. Could I finally be pregnant? Hubby and I have been trying since February and this is the first time I've been late. Am I just testing too early even though I'm late? Trying not to get too hopeful incase it's all in my head! Thoughts?? Advice?? Thank y'all!