Bena, it's not so straight forward to calculate lunar age. let me try to explain.
you need to know your chinese birthdate. then look for your chinese birthdate in the year you plan to conceive. that's how you work out the age.
So, if your chinese birthdate is say lunar 1st month, 1st day, and you conceived today. If your english age is 28, you would be 29 now because you added 1 year as your chinese birthdate had passed. This year's lunar 1st month, 1st day was 26 Jan 2009.
As for the lunar month, you can refer to any chinese/english calender. Today is lunar 1st month, 16th day.
Hope this is clear!