L.C.
I got pregnant first try at age 38 and after a miscarriage I got pregnant first try at age 39 and my husband was 42. So age may or may not be a factor. Both times I waited until the 5th day after I got my period then we tried for 10 days straight. You did something similar so maybe you just needed to try a few more days to be sure. It can't hurt to have both you and your husband tested but I would have your husband stop smoking since that can be causing the problem on his end (and it's healthier for him and for the whole family if he stops). See what the doctor says. Good luck!