where to start?

Jenn
Hello! I'm new to glow! 
My husband and I are TTC our third child.  We have never "tried" to get pregnant. We just kind of did both times.  But timing is everything this go around cause We now live in a very hot place I am adamant about not being 9 months pregnant in the heat of the summer here! 
Anyway so where do I start? I'm not in any birth control, my periods are very regular.  I on day two of my period now.