Chemical Pregnancy

I had a Chemical on the 29th of JULY , out of curiosity have you had one if so when did you get your BFP. I tried this cycle I had BD from the 2 to the 10th I think ovulated on the 11th but missed, but BD again on the 12th to the 14th. I got a positive opk on the 10th just want to relax my mind a little.