Ovulation

So I tested yesterday day morning and my ovulation test was negative. This morning I tested and the test was very positive. I tested once I got home from work and still positive but my test earlier was a lot darker than the control line. I didn’t DTD until now because I was at work today. We haven’t had intercourse this week due to me having the flu and being out of it. Are my chances still high this month? Did I wait too late?