Based on the Chinese gender chart, if you get pregnant and your first day of last menstrual period falls during one of the following time, you will get a baby boy: December 18, 2017 - December 31, 2017 January 1, 2018 - January 31, 2018 February 1, 2018 - February 28, 2018 March 1, 2018 - March 16, 2018 April 16, 2018 - April 30, 2018 May 1, 2018 - May 14, 2018
Based on the Chinese gender chart, if you get pregnant and your first day of last menstrual period falls during one of the following time, you will get a baby boy:
December 18, 2017 - December 31, 2017
January 1, 2018 - January 31, 2018
February 1, 2018 - February 28, 2018
March 1, 2018 - March 16, 2018
April 16, 2018 - April 30, 2018
May 1, 2018 - May 14, 2018
This could help you increase the baby boy chance. There are also many other ways to help you increase the chance:
https://www.yourchineseastrology.com/ways-to-get-baby-boy.htm