wrote on Aug 4^th, 2017 at 3:55am:

What do you recommend I do?

I recommend that you not take the polygraph and that you share with your husband the information on polygraphy that is available here, in particular, our book, The Lie Behind the Lie Detector, which explains how polygraphy is unreliable and biased against the truthful:

https://antipolygraph.org/lie-behind-the-lie-detector.pdf

It would be foolhardy -- and a waste of money -- to allow pseudoscientific polygraph results to influence your marriage.

You might also refer your husband to this statement by Gary Smith, who found himself in a situation similar to yours, but made the regrettable decision to submit to a polygraph "test":

https://antipolygraph.org/statements/statement-028.pdf