3 weeks after miscarriage, pregnancy test still positive

So confused! I've taken numerous pregnancy tests since my so called miscarriage, each one equally positive, never faint. I haven't seen a doctor at all, they told me to go to the ER when I was bleeding but I was just letting nature take its course. My bleeding only lasted a few days, mostly when I would go to the restroom. I never bled enough to soak through a pad. I also, have not had sex since... so I know this cannot be a new pregnancy. Did I even miscarry? This pregnancy test was taken today, 3 weeks post "miscarriage".