Faint lines on hpt. When to go to dr

Melissa • Ectopic 10/17👼🏻 Partial Molar 5/18👼🏻, Miscarriage 11/18👼🏻. 🌈👶🏻 1/20. Pregnant with #2 🤞🏻 6/22

Being that my last pregnancy was an ectopic I want to start going to my dr immediately for blood work but my hpt has such faint lines idk if I should wait What would you do?