Or the time between the first line I got and then a proper dark one?
The first line I ever got was Extremely early if you all remember ages ago? I think I caught the egg as it was fertilized. I was convinced I was going to have another chemical pregnancy as the lines disappeeared again in the meantime. (by the way is completely normal for this to happen as I've found out)
Then I tested at 8DPO strangely enough I got a very very feint line, the next day it was a little darker then the next one at 10DPO clearly visible positive line.
But everyone is different with their HCG levels and everything though. They say retest every 2-3 days which I've been so surprised te darkness of my tests have been increasing so much over the space of 24 hrs!!! :-O
But with my others my tests seriously looked exactly like yours at around te same time and were very slow to darken!
Sent from my iPhone using Bub Hub app