Got the faintest line ever ! And I mean faint so much so that I’m thinking it may have been an indent although the pic was within the time frame- but this evening there’s nothing (6hour urine hold)

Anyone had this and turned out pregnant ? Just thinking this was a fluke and I’m not pregnant but I’m curious! Thanks :)

Strip test this morning, frer this evening and I don’t really see anything on the frer 😔