Frustrated! Late but negative

Of course the one cycle I don't track, I must have ovulated late. I normally use ovulation tests and bbt but this cycle I didn't do either. I did get both stressed and then pretty sick during this cycle so I'm guessing that has just delayed things. We have still been having sex every 1-3 days though so if I ovulated late we could have still caught it. But im now 7 days late based on my typical ovulation/periods, but still testing negative for pregnancy. So frustrated that I didn't track this cycle so I dont know when or if I ovulated so I dont know when to expect my period or a positive.