Period or Spotting??? 3 months of TTC

Hallie
So I was meant to get my period on the 21st of feb I was two days late and on the 24th and 25 (15 & 16dpo) I had brown and sometimes pink discharge only when I wiped (sorry tmi) only a little bit of brown discharge on the pad... and then nothing after that my cm was like egg white and I'm really confused because when I get my period it's mild to heavy for 4 days straight but this only went for 2 days.. I did a hpt at 1:30pm and got a BFN.. has this happened to anyone else and ended up in a BFP??