Glow vs Doctors..

Niecy • FTM...My heart and joy arrived January 21st, 2016; Layla Eliana 👶🏽😍🎀😘
According to Glow, I'm 8 weeks and 2 days pregnant. I had my blood work done on Wednesday and got my results back today and according to the doctors, I'm 5 weeks. How do I change my info on Glow to match what the doctors are saying??