Is It Safe To Reuse Contraceptive Nuva Ring After Having Unsafe Sex?

hello.i am on the contraceptive Nuva Ring. Today i had sex and noticed (a couple hours later) that my ring fell out during sex. I found said ring and put it back in after cleaning it off but am now worried about my risk of pregnancy as he ejaculated inside of me.. Does this pose any risk? If the ring came out after we finished up, am i at risk? Someone help!