Semen analysis?

My ob/gyn diagnosed me with pcos a month ago, he also did bloodwork and ultrasound. Everything was fine. But he suggested that my fiancé should do a semen analysis before he puts me on medication. His said he wants to make sure the issue is just me and not both of us. I am thankful for the fact that he very thorough! I am worried about this test though. What if something is wrong with both of us? Is there something he can take of his count is low or something? Has anyone had a successful pregnancy with either or both of these conditions?