Not able to Concieve
Doctor Answers (2) on Not able to Concieve
A woman's cervix (neck of the uterus) stores spermatozoa in small pits within it (cervical crypts) and continually release them in batches into the uterus (like time-release capsules), so that no matter whenever the egg is released there are always several sperms readily available to fertilize. This is a wonderful arrangement by nature. All this works only from a few days before ovulation to a day or two after ovulation.
So go ahead and follow your doc's advice.
Make sure your wife is not breastfeeding the first baby, not even occasionally.