Pregnant after chemical... need insight

Kate

I had a chemical pregnancy last cycle (confirmed with blood work) and my HCG levels did go all the way down. This morning I am showing a faint positive on the test this morning (DPO 12) 🤞🏻

At what point should I call my OB? Should I wait to see if the lines get darker over the next few days or should I call them for blood work right away (in case something is off, which caused me to lose the last pregnancy)?

I don’t want to pester them if this is not something worth calling about. Thanks for your help! We have been trying for about a year.