When might ovulation be?

So I have been <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> for like four months and it has been on the 1st and ovulation around 15th/16th. Then I got pretty sick for a month+ and it pushed my period back a week starting on the 7th Now I am not when my ovulation will be. I'm trying BD before ovulation to sway girl, but making sure to not miss it by starting to early.