Ewcm?

I am new to glow and just started paying attention to certain things... I was just wondering if what I am experiencing is normal or not...

1) I dont get ewcm every cycle, probably about every other cycle

2) I have a moderate of ewcm now, and my fertile window doesnt start for another week

Preseed is kind of price for the amount you get and I was planning on using it only in my fertile window, but am starting to think I should use it sooner since I have ewcm

Im just kind of confused....