Benicar should not be taken by pregnant women, so as long as it is your husband taking the Benicar, there is not a problem.
While there have been no actual studies carried out on humans, Benicar has been tested in animals, and it was shown that fertility was unaffected.
You will find detailed information on Benicar in the PDR section at Drugs.com.
http://www.drugs.com/PDR/Benicar_Tablets.html