NEED HELP ON NY CYCLE

Smilie • Hello our first baby girl is on the way on the 22nd November 2015... Please be a sticky baby 👼 ✨BD to all
So I need some help on DPO and implantion 
So from the 24-2-15 to 28-2-15 I tested high fertility on CBlue digital then forgot to test on the 1-3-15 so I tested on the 2nd and got peak day solid smile that was the Tuesday 
5/6 days past ovulation maybe I don't know on Sunday night after sex I had allot of brown stuff when wiping and Monday more brown streaks down stairs with heavy breast am backache on Monday night and I had pain in my lower abdom that night. 
What I want to know how many DPO I'm i and does that sound like symptoms 

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