Wish to have a boy...

di

Im a mother of a beautiful 1year 2 months baby girl. And wish to have a boy now to make our family complete.. Since previous was a c-section i want to know may i start trying now to get pregnant? What are the medicines or exercise should i try? And i know its totally unpredictable boy or girl thing.. But from your experiences, can u give some tips that can increase my chances to have a boy...???