Am I still pregnant?

I went for a blood test last weekend on what I thought (calculated off my last period) was exactly 6 weeks. A few days later the doctor tells me my HCG was 400, which is too low for 6 weeks and is more consistent with 4/5 weeks. I had another blood test and I’m waiting for those results. Hopefully, I’m just measuring behind and haven’t had another miscarriage/it stopped growing weeks ago. I’ve had no bleeding or cramps though. I just took this test and it’s still dark, should it be going lighter if it has stopped growing weeks ago?

I’m just extremely anxious and google searching everything. I have a scan this Friday hopefully they can see something and hopefully my HCG has increased.

Pics of test I did 2 min ago