Rainbow baby? Babies?

back in March I had a miscarriage and me and my husband are on the ttc journey. I found out I was pregnant with very early signs. I tested and got dye stealers. my last period was June 28th putting me at 6 weeks 6 days along.

I had 4 beta drawls. first results hcg was at 27000s at the end of week 4... 2 days later it was 54000s... and 4 days later week 5 and 6 days it was at 87000s..... 3 days later at 6 weeks 2 days it was over 102100 . I have been put on progesterone since week 4 my progesteronr levels were only at a 7. Hoping for a sticky baby or babies. Love to hear advice .... ultrasound is in 6 days :)