thought this was my month 😫

I was so hoping that December would be my month for my BFP. My fiancé and I have been trying to conceive for 11 months now. I really thought this month was going to be it. We BD every day of my fertile window. I actually ovulated early, the 3rd. AF is due on the 17th. This morning I woke up with light cramps and brown spotting. I know I️m not “out” till AF shows up, but since I ovulated so early, flow adjusted my period week to a week sooner than it normally is. So if I am getting AF early, then she is super early. Is it possible to be getting brown spotting and still get a BFP? I don’t want to lose hope, but I️m getting discouraged. 😞