Ovulation chart

Madhu • Ttc 2 months our first baby
I got opk positive on 14th and egg white cm but glow chart says my ovulation on 17th. I was not that wety n no egg white cm on 17th.. So does glow chart has wrong predictions??
​I bd on 10th, 12th, 13th, 14th, 15th only based on my opk...
​According to glow chart did I lost change being preg this cycle??