Could I still be pregnant

I read somewhere once you miscarry and the bleeding stops or becomes supper spotty your hcg levels should basically be none existent so if you where to take a test at this time the confirmation line would be supper faded or non existent. So today i decided to take a test it's almost been a whole week sense it happened I have not yet gone to a doctor and my bleeding is basically gone and the test came back as positive and both the confirmation line and control line are supper dark agin. I did take a few tests the day it happened as well and the control line was faded like it should have been but the confirmation line wasn't so dark either it was more of a light pink then a dark rose red. And agin I haven't even seen a doctor about this pregnancy yet could I still be pregnant could I have been pregnant with twins as I have read lots of stories where people where pregnant with twins and miscarry one but the other ends up being fine and healthy. I have also started getting new symptoms of pregnancy such as food and smell sensitivities sense the miscarriage as well.