Your sperm count is sufficient for normal conception. Was the test taken after 3 days abstinence? also, your wife has to undergo hsg or sonosalpingography for tube patency. If it is normal, and if her cycles are fairly regular, try for pregnancy
during her most fertile period
(usually 10th to 20th day) for the next 3-6 months. Both have to regularise your biological functions. Sleep in time, meals in time and so on.