We've got it here too, Amy. Is she an enthusiastic nurser? G totally is and I change my clothes frequently as well (alhtough now I hold him off to the side most of the time burping, and will be getting all the carpets professionally cleaned after he's done). But, what surprised me is that I went to wash the burp rag that I always keep by the bed (usually do this every other day) and I realized I hadn't used it yet. So, when he does the more calm/sleepy feeds at night, the spitting doesn't happen as much (anymore, that is... I used to change pjs and pillow cases frequently as well). Anyway, just a thought.