What are my odds of being out this month?

I am 13 dpo and this morning when I wiped I saw a teeny tiny dot of brown watery mark (probably the size of a pen tip) really had to squint to see it.

I had bfn before (11 and 12dpo) and haven’t tested again. My temp as you can see below is still up when it usually drops between 10-12 dpo before AF starts. Am I out this month or any chance to still get a bfp? My period is due Saturday so in 2 days. Please help I’m feeling really discouraged.