Please help!!

I miscarried around the first week of October. I even had s negative test afterwards. Around the second week of November l notice similar symptoms so i decided to test again and got a BFP. I went to my general physician for a urine test which came back negative. So i decided to go to my OB only to get the same results. They did blood test and my levels came back at 8, 3 days later they were still 8. Almost 2 weeks later they had only risen to 15. I’m confused. Im still having all the same symptoms and my hpt are still coming back as a faint positive. I haven’t had any signs of an ectopic. Has this happened to anyone else?

My OB stated it could be a new pregnancy but looking at my results she’s just as confused. I’ve even had a period( no clumps, the length of my normal period) my OB examined and referred to it as my cycle as well. my test are still coming back positive.