When I was pregnant, I had implantation bleeding that started at 11 dpo and lasted 4 days and was just like af, so you never know! I just test every month now just in case, but I know that dang bfp can be really disappointing.
How many dpo are you? It could just be hormones, I never spot before af or have any pms, but last month I had cramping and spotting for days before af came. Take a hpt to put your mind at ease, it can't hurt and then you won't have to keep wondering. I just started using those cheap $1 ones from the dollar tree, they got great reviews.
Well this brown turned into just a light pink when I wipe...definitely isn't a normal month I must say...but I always hope every month im prego and it's always a disappointment
Sounds like it could be implantation bleeding!