It could just be you're more dehydrated by the end of the day so the hcg shows up in a higher concentration at the end of the day. It's usually better/darker in the morning because most wen don't hydrate all night.
As far as I was concerned about line is a line but your doing the right thing by going to see your doctor! :) good luck x
Thanks Blue. I have set up an appointment with the doctor for 19th March (2 weeks later) but just needed to ask you that you are sure it doesnt matter how dark or light the line is, right? I was just feeling a bit dodgy because of previous miscarriage... :(
I don't think it really makes a difference if it's dark or faint, it's still showing up levels just might be at different concentrates, everyone's different. Both the home tests I took were a little faint from what I remember and I'm now 31 weeks along. Set up a Dr's appt I'm sure they can give you the best answer! Congratulations and good luck!! =)