Possibly Stolen Photo?

I'm sharing a photo of the lake I live by. Its a fairly typical photo, I've probably taken a couple dozen photos of nearly the same view over the years we've lived here. The problem is, I don't remember taking this particular photo, it just seems to have appeared on my phone. Here is my moral dilemma, if someone else took the photo and I share it without permission, am I stealing? Yes, it is in my photos app and was certainly taken by my phone. Mental lapse? Or maybe my phone was taken advantage of by my husband or daughter and they took the photo? In that case I feel justified in using it.