Confused and feel like I'm on a roller coaster

These are my hg results. The 24000is today's results. I'm went in to my my appointment thinking they know I'm for sure having another missed miscarriage based on my ultrasound I had not to long ago. They found a yolk sac and something else I forgot (sorry I'm very emotional and everywhere right now I can't think straight). So my dr told me they wanna do another ultrasound just to be sure because it's rising but not rising as much as it should. It should be between 40-60 thousand I'm around

240000. I'm 9wks 2 days right now. I'm just emotional because it was hard to think I'm having another missed miscarriage and I'm finally I guess you can say coming to terms with it then this appointment happens and I feel like I'm back at square one thinking maybe I have a baby and getting hurt over again. I have my ultrasound Monday then see my obgyn Tuesday to discuss what is gonna happen further. Please someone tell me something anything really I'm not even sure... idk why I keep getting miscarriages it's just so confusing that its still rising do any of you ladies been through this