Can I have a healthy pregnancy?

Hi, I just found out about two weeks ago that I was pregnant. My hcg levels are super low, and have been rising slowly. I also have had some heavy bleeding and cramping but hcg still slowly rising, and I have had a lot of pregnancy symptoms. My doctor told me I could potentially be having a miscarriage, but I was wondering if anyone experienced these and still had a healthy pregnancy? Also if anyone has ever experienced the “hook effect” I have been doing so much research, and my babies father is a family FULL of twins, doesn’t even skip generations. Any information or suggestions would be so appreciated!