My husband and I are trying to have a baby.. and as we all know trying when ovulating can be a chore... since my husband suffers from ED a few days before and when I ovulate I try to get him to have sex but he can't "get it up" more often than not. He refuses to take prescription meds to help "stay stiff." He prefers the natural vitamins... but we haven't seen any positive results from the vitamins. Any suggestions?