I just started carrying my Mandy in whiskey 2 days ago. Out of the blue I started experiencing lower back pain - the very same day I started carrying my bag. I first attributed it to the severe cold we're having here, but now Im beginning to wonder if it's the bag??? I've got in it: a hardcover book, wallet, old Coach skinny makeup bag, mini skinny card case, glasses case, sunglass case and kleenex. There is still tons of room left in the bag. What do you guys think?