Well, that didn't work

Hubby and I went shopping Saturday night and since then I've been feeling like I've been losing my mind.  I keep thinking I should have some food items that are no where to be found!  I've looked over our reciept and through my car and the pantry and the freezer and I've determined we MUST have left a bag at Target. 
Now, here's where you come in, is it a normal thing to call target and ask if they have (had) my bag? and if I can come retrieve the items?  It kinda makes me feel bad to pay twice for these things but I have never done this before, so I don't know what protocol is and what I can ask for?  help?  (I know it was probably 10-20 dollars worth of food, and that's not TERRIBLE, it just seems so wasteful!)