Vvfl connected to miscarriage?

I am starting to wonder if my pregnancy tests are predicting the viability of my pregnancies. I know they say every pregnancy is different but one fact remains true: the more pregnancy symptoms you experience as early as possible, the higher the HCG level is in your blood. With my first child, I had symptoms as early as 2 weeks. When I tested, it was right when my period was due and after a noticeable implantation. The test revealed to dark lines as soon as I peed on the stick....like immediately. Now trying for number 2 the past 9 months, I have experienced 1 chemical pregnancy and 1 miscarriage. With the chemical pregnancy, I had no pregnancy symptoms before testing. When I tested, it was 2 days after my missed period and the line took forever to show up...and it wasn't dark. A week later I started spotting so I tested again and it took even longer to show up and it wasn't any darker but a little lighter. With my now miscarriage, I didn't test positive until 3 days late. The tests slowly got darker and I was hopeful. My symptoms weren't anything much pastvPM. Around the time I should have started feeling sick, I started to get concerned. Then I started spotting. So for me, it seems like the way I test is telling the story, along with hcg symptoms. Has anyone else made any similar c

onnections?