Shift work interfering with ttc

I am CD11 today and starting 3 night shifts tomorrow....I have taken ovulation tests last couple of days which have been negative. Really worrying that I will start ovulating whilst on nights and that it will mean we will miss out ttc this month! Can't BD when I get home in a morning as my husband literally leaves as I walk through the door and I leave just as he gets home on an evening! So annoying! Does anyone else have this issue??