Digital tests and how many weeks

Laura
I believe I am 5 weeks 2 days (22dpo) and so the clear blue digital pregnancy test should say 3+. When I was 3-4 weeks pregnant  it said 1-2, then 4-5 weeks pregnant it's said 2-3 but now I am plus 5 weeks pregnant it still says 2-3. I am seriously panicking. Anyone else have this? 
Laura