Likelihood of BFP

Kimberly
My husband and I are ttc. This is our second month. He had to leave for military duty for a long weekend during my most fertile days. We only did the BD during the first two days of my fertile period. We also did BD multiple times in the days between my last AF and fertile window. I am sad knowing that it is most likely only a very small chance of being pregnant this month, since during my most fertile days, he was away. What do you ladies think is the likelihood of me getting a BFP this month? Have any of you conceived when not doing the Bd on your most fertile days? 
I ask because looking ahead, his future military report dates (extended weekends once a month) typically fall right smack in the middle of my fertile window!! This scares me and makes me think it could take a very long time to get our BFP. Help!!!!!