Am I out?

So hubby and I started having sex on the 11th. We had sex every day and on the morning of the 15th I got a positive OPK. That night we had sex but we were just to worn out to BD on the 16th wich is an portent day. Now I'm worried I'm out this month :/ only time will tell I guess. I'm just driving my self a little crazy. Do you think we have ok odds?