Going to miss my next fertile window

I'm going to entirely miss my whole fertile window in October it's supposed to start the 7th-14th and I'm going on a very important family vacation that I cannot schedule around it. I leave early morning of the 6th and return on the 14th. do you think that if my Boyfriend and I have sex the day before, on the 5th,and the day I come home the 14th,  that we could still have a somewhat high/ish possibility of concieving?