Rollercoaster Results +++-++

Hi ladies!!! I'm due Feb 17 as long as I'm not having a miscarriage... I went to my primary care physician's office to confirm the pregnancy yesterday, and their urine test came back negative (when I got home, I took 2 more different brand urine tests which were both positive). Then we decided to get the blood test, which came back positive, but with a very low hcg level (256). I spoke with my obgyn who said that perhaps my hcg level is going down, which would be concerning. He recommended that I get another blood test tomorrow (48 hours after the first blood test) to see if my hcg levels are rising or falling. We will proceed from there. Has anyone experienced this? My husband and I are experiencing so much anxiety over this. Thank you for your time and support!! I love you ladies!!