Irregular periods & Glow

Marisa
I have always had an irregular period. Having PCOS and being way overweight (5'3" and 349 lbs at my peak) I've recently cracked down on eating habits and have lost 20lbs (but I won't stop there! =] ) In losing these 20lbs, I got my period for the first time in almost a year(yay!). My husband and I are planning to start trying to conceive in August, knowing we will most likely have some trouble but would like to conceive by the end of next year (end of 2016).
When I signed up with Glow, I had no idea how long my cycle is since I haven't had one in so long. My main purpose here is to help me track ovulation to make sure I am actually ovulating (I'll be using ovulation tests). Will the app automatically update my cycle length judging by when (if) I get my next period? 
Also, does anyone have any tips that I could start now to increase chances of fertility? 
Thanks in advance!