Weeks estimator test! Freaking out!

Bre • Married•Mama to Jax & Tori
Yesterday afternoon my result was "3+" and now this morning it is "2-3" should I be concerned about this!? I took the test this morning bc I thought it was fun to see "3+" to know my baby was growing from my
​First test I took that said "1-2" ugh!! I have a doctors appt today and just when I was starting to relax this happens!!! Miscarriage?!? ?(no bleeding or cramping!)