BD schedule

Ashleiy
Sex on Sunday positive opk( peak from clear blue advanced ) today around 10 am. Could Sunday still do the job ? Won't be able to BD again until tomorrow night due to work schedules. Life of a nurse 😫any help? Anyone conceive 2 days before ( app says I wa me fertile though once I updated opk ) or should I bet on tomorrow ?! Or did I miss out this month ?