Line progress Wonfo

Hannah

Can you ladies see a good line progression? I had an early miscarriage before this one and lines never got this dark but Im concerned that for the past 2 -3 days the line seems the same.

What do you think? Its 10/12/14/15/16/18 DPO.

From 15 to 18 DPO I can really see a difference

But from 16 to 18, I feel like its the same. Any experience with wonfos? Im concerned the line is not as dark as the control line yet.