I think I am out slight TMI

Ashley • After 22 months of trying Hubby and I had an IUI which helped us welcome the sweetest baby boy Oliver on 10/6/16
I need some insight I am 12DPO today and I am sure this is AF coming however I need to hear from someone that they had a big dip and still got BFP I do not want this to be over I am still looking for the glimmer of hope or I need someone to slap me in the face with reality and say it's over try again next time .... I had very light brown spotting this am like I only notice it when I try to find it like ball up TP and get a sample of I just wipe there is nothing ... I just don't know I really wanted it this month just like most of us ... Sorry