Chances of conceiving? Please give your input..

Alicia
12/7: BD 
12/10: positive ovulation test from Clearblue and BD twice 
12/11: day after positive opk, BD again 
12/20: Mild to strong cramping
12/21: no cramping
12/22: Glow says AF should start, woke up with strong cramping, no AF and now cramping is barely there
What are the chances?? I have taken many tests and all have been BFN