I had a missed misscarriage in June, took misoprostol 2 times, had d&c mid July. My hcg levels after d&c dropped from 8000 to 200. One week post D&C my levels were at 200. I was instructed to take a pregnancy test and if it came back positive I was suppose to call my Dr. Guess what it still showed up positive! Two weeks after D&C my husband and I did have sex. My levels 2 days ago was 150 and today it was 170. My Dr thinks I'm either pregnant or there might be left over tissue. Has this happened to anyone before?