Hcg levels rising enough?

Hi guys, I had a miscarriage last month and I went in for a follow up last week. Turns out my Hcg levels were high 3525 but I could mean there is still tissue left behind. Did an ultrasound and my uterus looked nice and round and not jagged like during the miscarriage and there was a yolk sack not like with the miscarriage. Did another job Hcg test and it’s 6048, not quite doubled but almost. I’m worried it can be another miscarriage. Going tomorrow for more blood work and next Friday and ultrasound. Do my numbers look normal?