TTC after implant when did my cycle start???? Help

Okay so I was on the implant around six months. I was bleeding for ten days and on the 10th day of bleeding I had it removed (11th of jan 2018). The day after I had it removed (12th of jan) the bleeding had stopped. Then on the 13th it started again for 3 days but felt like a normal period, had cramps and what not. And before the implant my periods were normally 3-4days long so I guessed that was my first period after coming off implant. Anyway so I guessed the first day of my cycle was the 13th. I think I ovulated on cycle day 13 (26th of jan) because I had egg white mucus and Glow predicted that was the day i ovulated anyway. So I’m due my period on Thursday I’m 12dpo today but been getting negatives the last 2 days. I know I’m not out til my period shows but what do you think my chances are? Should I have counted the 13th as cycle day 1 or should I have gone from when I started bleeding 10 days prior to implant removal? Which was the 3rd. Have anyone gotten pregnant straight after implant as well?? I had Nexplanon. Thanks in advance ladies can’t wait to hear your stories xx