clearblue digital BFN

So I just tested with first morning urine and it was a BFN. I used clearblue digital and I'm 12 days dpo. Glow predicted my period to come yesterday and it didn't but recalculated for it to come tomorrow.  My bbt chart shows elevated temperatures for 12 days, it did dip today but not past the cover line. What do you ladies think? My boobs have been so sore for like 10 days! Which is very long for me. This is our 3rd cycle now TTC, wondering if I am probably out this month. 😔