Nuvaring was our for a day?


My last period started 12/3/17. My fiancé and o has sex on 12/16 and 12/17. Well on 12/17 I noticed my Nuvaring was missing! I found it and put it back in. It was our for under 24 hours I believe. Next period is due Sunday 12/31.

What are the chances of me being pregnant?