I'm just wondering how close to AF implantation bleeding could occur?  AF is due tomorrow 3/22 according to Glow but 3/24 according to another app.  I took a test this morning and BFN and then had some brown spotting when I wiped (sorry).  I'm 36 (37 in June) and ttc#2 for me and #1 for my husband.  I have a 12 year old daughter.  We've been married for 4 years on 3/24 and have been ttc on and off since then.