Please tell us you shot RAW. If you didn't, let this be the day that you switch to 100% RAW shooting.
There is work to do with this image, but it's by no means lost. If this needs to be your money shot and you don't feel up to the task, pay someone to do it for you. If the result still looks a bit weird, it's extraordinary how much conversion to B&W can conceal. Good luck, and post the rescued image when it's done.