AF Due 5/27, Fertile Window starts Tomorrow!

Lynzee • Mommy to Ammarie, born on March 3,2016!
I'm new to this, only been TTC for about a month now. 
My period is irregular but Glow and Ovia are saying its due to come on the 27th, and my fertile window starts tomorrow! 
I'm hoping to have someone to just talk to during this month, keep my eyes on the prise! ;)