High fertility OPK

Lauren
Hi ladies! 
Need some advice. Last month I had one day of high fertility on my ClearBlue Advanced OPK immediately followed my peak the next day, however I was traveling and not with my hubby, so no BD :(
This month I am on day 4 of high fertility and waiting for the peak. Has anyone seen it change month to month? 
Also we have BD each day that I have gotten high results except today so far (Wednesday). I just found out he will gone overnight tomorrow, which could be my peak. So I'm asking if we should BD again tonight AND tomorrow AM? Or just one or the other? I'm not sure since I hear different opinions about Sex everyday, 24 hours apart and sex every other day. 
Suggestions welcome :)