Today's is defo darker Hun! I'm sure you'll get a *pregnant* on a digi in the next few days. Let's be honest we can all see those lovely lines getting slightly darker as the days are going on. Your pregnant darling! Congrats!! X
I never got a digital positive for ages, frer never really went dark either, I think I was two days past af due for digi. I was so disheartened but I think they are just crap x