very faint line or evap? (or my imagination?)

Amber
Is this an evap line or vfl? My husband and I have been trying for a year with endometriosis and PCOS, and I was just started on metformin. Only 11dpo, but fingers crossed! Walmart 88 cent test was clearly negative. Will try again in 2 days, and trying not to get my hope up. Do I have line eyes??? Thank you!
Update: it was an evap :( took a frer and another of these tests today, both negative 😭. Baby dust to all!