BFN 12 DPO...is it still possible to get a positive?

Jenna • TTC#2. Have an almost 2 year old daughter. Miscarried at 10 weeks in April 2016. Chemical in July 2016.
I tested at 12 DPO on Thursday and got a BFN. I ovulated either cycle day 13 or 14 and today is day 29 and no period yet. Would it be possible to get a BFP even after getting a bFN at 12dpo? I have uploaded a pic of the test from 12 DPO. Clearly negative. According to glow my period should have come yesterday.