When are my most fertile days!

Yasmin • Have a teen from previous. Married for 7 yrs, 1 natural mc in 6-2014, chem in Dec 2014 & Jan 2015. We are now pregnant!
Hi my peeps! My Glow app was working fine before but when I got my BFP I thought I didn't need Glow anymore to ttc. I just recently had a chivalry pregnancy and now that I'm back on Glow, I can't find my green days this are highlighted telling me when I'm most fertile. Is there another way to find out on my own without waiting for my Glow app to get fixed? Thanks!