Hello Around 6–7 weeks my hCG was 55,888 mIU/mL Five days later it was…

Hello Around 6–7 weeks my hCG was 55,888 mIU/mL Five days later it was 44,793 mIU/mL Please tell me, is this normal? Or is there reason for concern with the decrease? I'll go for an ultrasound only in a couple of days.