AF due today, bfn and temp spike in bbt

Becca • TTC baby #1
Hey everyone,
I'm TTC with my partner. We got pregnant once in dec and had a mc at 8wks 3days. We took a break front TTC for a while and restarted 3 months ago. AF due today, bfn (didn't test positive with last pregnancy until after 6 weeks), still no sign of AF. 
Feeling a bunch of symptoms - not sure if I have created them in my mind because of wanting this so badly lol. 
I was on clomid for the last 2 cycles and dropped it for the current cycle - decidided to take a more relaxed approach as it was getting very hard emotionally, I'm am now currently 12dpo and on cd31. 
Interestingly last night I had a few cramps and a lot of discomfort and my bbt spiked this morning which is the first time I've seen this so late in a cycle.
I've attached a comparison of my last 3 charts, has this happened to anyone? If so how did it end? 
Green is this cycle (Oct)
Purple - September 
Blue - August