Hcg level scare?

My hcg levels were a 382....

I saw a post that a ladys hcg was like 4,312 and she was only 3 weeks pregnant and something days....... how are her levels so high and mine arent if in around the same as her, im 4 weeks today. I get my results tomorrow to see if my levels doubled.

Why are mine so super low πŸ˜”πŸ’” im afraid that im gonna lose the baby πŸ˜”