dH sperm analysis .. Help

So my husbands report shows motility of 41%, progressive motility of 15% and morphology 10%. I am really concerned because my research says
there isn't a lot that can be done to improve this. Additional information about him - he does not smoke at all. Drinks once a week which he has stopped a month back. He works out regularly and has good diet. He works long hours and has a stressful job. In the past month, just for doing everything we can, he started on fertiliaid. But ofcourse it will take about 3 months for it to show in test results. Btw he is 38yrs old. Any ideas of what else he can do? Should we see a fertility specialist? I am freaking out ...any suggestions ?