Has anyone else experienced this?

So I’ll be 6 weeks tomorrow.

When I had my bloods done a week ago I was like over 2000 in the measurement of HCG.

My clear blues have told me I’m 3+ (6 weeks) but my first response left line is faint? The line which tells me I’m pregnant is dark... I just thought that line would also be dark. Is there a reason for this?

I definitely need to stop testing though🙈 Over two weeks of nonstop testing and over £100 down on tests