10 DPO BFN & 11 DPO BFN, any hope?

We are trying to have our first and I have tested with the Early Pregancy Tests on day 10 and 11 past my O date and got 2 negatives. AF is due on Friday, I have a very regular 29 day cycle. I have what feels like every symptom in the book but think my mind and body are playing tricks. What are my chances I may still get a BFP?? Anyone have a similar experience while TTC and get thier BFP still?