Hcg levels - please help, I’m so worried

Allie

I had my bloods tested at 6 weeks 1 day as I was worried I had little symptoms and hcg came back at 35,600. Had done again at 7 weeks 1 day and came back as 84,000. I have read about hcg doubling every 48-72 hours and obviously mine has taken a week to go just over a double. I’m really frightened this means somethings wrong. Please comment with any experiences. Thanks