My Levels Was 68 Monday And I Take This Test

My levels was 68 Monday and I take this test and it says I'm 3-4 weeks but it keeps says it. This girl says that my levels isn't going up that's why it isn't moving she said if it doesn't go up to 4-5 then i am on a miscarriage risk I don't know what to do. The test I take is clear blue advance