clear blue digital help! xx

Ol
Hi everyone. Found out I was pregnant yesterday (3 weeks 6 days exactly from last period) clear blue is showing 2-3 weeks. Is that right? I thought it would only show 1-2 weeks? My first test which was first response showed he pregnancy line stronger than the control line too. Do you think I could be further along than 4 weeks? 
I feel so sick and so tired already which is so strange never got sick in my last pregnancy until 10 weeks 😣