Faint line...

Hello Ladies this has never happened to me before. I think these are indent lines, but show up about 1 minute after the pink line. I have done tests after that and do not see any faint lines. It's FMU tests after that are not FMU. I have 3 kids and this has never happened with any pregnancy test! I do have spotting that has been going on for 4 days now, and some light cramping. This too has not happened except for when I was pregnant and had a subchorionic hematoma in all 3 pregnancies. I wasn't trying to get pregnant because imnin a masters if social work program with a toddler and a ten month old and a teenager. We were planning on trying late 2023 and 2024. My period lasted 3 days only and usually it's 5. And then I started spotting this week? 😳

Help me out!