If you want baby boy, her period should happen during the following time according to Chinese baby gender chart: April 7 - May 6 August 3 - November 28
05/04/2016 is not among the suggested time. If her menstrual cycle length is 28 days. Her next period will happen on May 3 which is the right time. So, you can try on her ovulation date around May 17 for baby boy.
If you want baby boy, her period should happen during the following time according to Chinese baby gender chart:
April 7 - May 6
August 3 - November 28
05/04/2016 is not among the suggested time. If her menstrual cycle length is 28 days. Her next period will happen on May 3 which is the right time. So, you can try on her ovulation date around May 17 for baby boy.
Just for your reference.