BFN DPO 13

Kat☀️

Is it normal to get a BFP after DPO 13? I’m due for AF in two days and I’m still getting negatives. I had “possible” implantation bleeding on DPO 9 and 10, dizzy spells, heat flashes, cramps that felt like twinges, nausea, hungry, fatigue, mood swings, ive cried like 3 times a day for no reason, increased smell, and still no positive test. I’m trying not to lose hope but it’s hard when all I’m seeing is negatives….