About hcg levels

Ashley

So a few days ago I posted I had a positive pregnancy test. Today I went to the doctors and then did both blood and urine test both came up positive but the blood hcg was very low 12 what does that mean has this happened to anyone else. Please I'm so nervous I have already had a miscarriage and two chemical pregnancies. We have been trying for 13 months to get pregnant. Please if any one has insight I'm going Wednesday to test again at the doctors.