Input please?

Amy • Married since May, 2015 but with my soulmate since 2007. Gavin, was born at 36+2 on 6/21/16 is now big brother to Ryan born at 40+5 on 7/20/18!!
I'm currently on cd23...AF due between 11/3 and 11/5 (cycles usually run ~26 days but had one that was 23 days which is why I gave the range for AF due)...I usually get sore breasts about 4 days before AF (but never sore nipples).  So about 3 days ago I noticed my nipples were a little sore.  Started feeling mildly nauseous yesterday and still am today (I'm talking barely noticeable).   HPT yesterday AM was BFN.  Today after I got home from work I went to the bathrooms to find 2 very small brownish spots on my underwear (I'm talking the size of a poppy seed) then when I wiped there was one more, same size.  I'm 11 dpo today.  Thoughts/input please?!Â