1st month TTC after BC - 15DPO no AF?

Marie
So I stopped my BC on 6/27, got my first AF 7/1, my husband and I BD during my fertile week, and I used ovulation strips and know I was ovulating. I'm 15DPO and no AF, which was due yesterday. Am I just irregular because of BC or is there a good probability that I might get a BFP in the next week? Please help!!