Am I pregnant after miscarriage?

Patient: I miscarried on Nov. 6 so about 6-7 weeks ago. I was about 10 weeks along but baby was only measuring 6 weeks. My Hcg levels were aroung 18000. One week later they were 900 and a week after that they were 115. I took a few pregnancy tests last week that were negative. A few days ago I took three tests that were positive. My Hcg levels are now 106. My midwife wants me to test my levels again in a few days and then we’ll know whether this is the same pregnancy or a new one. I am having some symptoms of pregnancy. Is it possible for my levels to only go down 9 in a month? Am I pregnant or is it possible that my levels haven’t fully gone down since my miscarriage?