False Positives on FRER?

Stephanie • 26 years old, married for 6, and mommy to 5 year old little lady. 1 baby in Heaven.

Hi all! I'm new to this site so please bare with me. I had a missed miscarriage at 11 weeks 6 days and had a D&C on Oct 1. My first cycle after D&C began 27 days later. Today at 9DPO I got a very light pink line on a FRER but a BFN on a dollar general test. Has anyone ever gotten a

false positive on a FRER? I hate to get my hopes up. I'll include a pic.