Need opinions/advice

We will be starting our second month of ttc. My history consists of endometriosis, making it harder to conceive. Now that it's only our second month ttc I am wondering if my husband should be on a supplement like fertilaid. His diet really isn't that great (but he is in good shape). He works for the railroad and can't eat a proper healthy diet during the week. Also he smokes those nasty swisher sweets that I'm trying to get him off completely. Since they are worse than cigarettes. I don't know what his count is or what his morphology looks like. I just wonder with all the years of smoking and not that healthy of a diet if we need a supplement just to be on the safe side. Thoughts and advice would be appriciated.