It can take up to 6 weeks for the pregnancy hormone (HCG) to leave your system. Retest in 4 weeks and if you still get a positive result then go see your doctor. At this point I wouldn't worry about it.
The hcg is probably still in your system. I still had a level of 70 in my system 2 weeks after my m/c. You should probably schedule a follow-up appointment with your doc to test your levels in the next week or so.
It could mean that but the pregnancy hormone does take time to leave your body which is why it probably is coming up positive!!
Yes, you need to go back to your doctor.
just go to the doc... your hormones prob have not gone back to zero yet try not to worry