Advise please 😊

Andrea • Pregnant with baby no 2 :) xx
Ok I took 3 Clear BlueHPT Yesterday and found out I was Pregnant 1-2  😊
This morning I did another test and it said 2-3 😊
My boobs are a little sore and I'm having slight lower back pain.?.,,, is this normal ?
Thank you girls 😊x