Hcg level results

Karen

So I got my blood drawn few days again for the first time and my hcg level came back low (52) dr said he would test me again in 2 days, I have been spotting for few days with pink and brown mucus, today I got retested and my hcg level is now at (77)...I’m scared because the dr said it could be a miscarriage..is this a good sign if I’m at 77??