what to do to prep for TTC

:) • ❤️
my fiancé and I decided that we are going to start trying in May after our April wedding. we really want to get pregnant asap. what are some things that I can do to prep my body for pregnancy. I'm 21 years old. it will be my first baby. I'm at a healthy weight but I am very nervous that it will not happen within the first couple months.  any advice?