I don't know where I put them...!!

Last night when I went for a walk, I was listening to music with my earphones on, but they're missing from my bag where I thought I put them when I got home...! I always keep them in my bag... where did they go... I just realized they weren't there when I went out earlier and I rushed back home to look for them, but I can't find them...! Wait, could I have dropped them outside?! This is a problem~! Where did they go!!!