Hcg levels

14/4 hcg was 1500 a few days later 18/4 it was 9700 (rounded figures) is this increase to much in that time period? I know I shouldn’t read to much into it but after a recent miscarriage I just want opinions. Can’t have a dating scan for another week (fully booked out) and we have no idea how far I am as it is. It’s so frustrating

Edit - Drs here don’t take phone calls, I got these results off of the lady at reception even though she isn’t suppose to tell me the results of any blood tests.