looking for help with my obsession of analyzing my chart.

do I still have a chance? f2f said af should have come cd30 and I tested that evening and got a bfn. when it didn't come yesterday I was really excited but then temp drop this morning on cd32 and light brown cm. I feel like maybe there is still hope? maybe I'm implantation spotting a little later after implantation? I was also up in to the early morning hrs last night. I still got three hrs of sleep but I find if I've had a late and stressful night my but is usually lower the next day. I've also been feeling sick which I'm hoping might have affected this morning's temp? I would love some Input as this is going to be driving me nuts all day until at officially arrives!