I miscarried on the 14th of January. I still haven't got my period, so I took a test to see if my…

I miscarried on the 14th of January. I still haven't got my period, so I took a test to see if my hcg levels have gone back to normal. it came back positive , but faint. before I got to bed I checked the same test and it is very dark now. could I be pregnant or is this from before ? I was 9 weeks babies stoped at 5 weeks. 2000 hcg levels before miscarry