5 weeks after d&c positive clear blue?

so 5 weeks ago I had a d&c. I lost twins. around 6 weeks they measured. 14 days after that my HCG was 102. now 19 days after that I have a positive test. on clear blue digi and at gp. I had bloods done today to see what could be going on. I have had no bleeding or soreness. or funny smells. how do I know if it's retained? I get results tomorrow just looking for some feedback xx