M.L.
Pick up the book Taking Charge of Your Fertility by Toni Weschler. It has a wealth of information about these amazing bodies of ours. It will teach you how to track your ovulation cycles (much more important than your MC when trying to conceive, as it can change monthly). You can track your temperature daily - it will go up on the day you ovulate and stay high until your period starts, so get busy on the day it goes up and for a week or so after. You can also track your mucus like Lesley said, and it is so obvious once you figure out what to look for. Or you can pick up one of the many different types of ovulation predictors, but it is cheaper and easier if you learn your own body's signals. It is all explained in the book. Best wishes to you both!