Nuvaring

Hi 
I just started the nuvaring this month. My doctor told me to place it after my period and I'd be fine. I did exactly that, then it was my wedding night and I had a lot of
Unprotected sex following the 7 days after placing the nuvaring. I know see online and in the instructions that I was suppose to use protection. I didn't bother to look before because my doctor said I was fine.
What are my chances of being pregnant?