Is there an obstetrician that can answer my question...?

My last period was July 21-27 and I had on Aug 4 using the withdrawl method and then he put back in and also we had on Aug 6 using the withdrawl method and he did not put back in. Anyway I think I may have been ovulating and I am dying waiting another whole week to take an ept so I would like a professional opinion. If there is an obstetrician can you please tell me what you think?