When to do the deed .

Natarsha • Been trying for baby #1 since June 2014 .. I have a blocked right side. IVF started April 2016
So I'm reaching 10 days late . And occurring to apps I should of started my new fertile phase in 4 days. Question . I'm assuming my AF is not coming this month so if it is a no show in the 4 days should I start my ovulation test and do the deed for the next month or anyone have any other ideas? Just don't want to waste my ovulation pack they are expensive !!!