First, let me give you a warm

to Fertility Charting!! So glad you found your way over here!!
I think it's brilliant that you are beginning to chart BEFORE TTC another baby. This will give you tons of information about your body, your cycles and hopefully make TTC that 2nd baby much easier for you.
Your BBT, your body temperature at rest, is a critical fertility sign because it is the only sign that will tell you definitively that you ovulated. It is also the only sign that will let you pinpoint (to as close a degree as possible) when ovulation occurred. All your other signs tell you only that ovulation is approaching.
If you're avoiding right now, anytime you see EWCM treat yourself as extremely fertile!!
I look forward to getting to know you better and helping you master Charting as you get closer to starting for Baby #2!!