DD is 12 weeks old and has had Nappy rash for the first time in the last 4 days. I use natures choice environmental disposals so no chemicals in them. I've been changing her every 2 hours and when wet or poohed in between. When we're not at home. When I'm at home I've been leaving her exposed to the air and it's getting worse. When we're at home i use cotton wool and water and not wipes. It' getting worse now and tonight there are small sores. Anyone any suggestions? She is usually happy and contented and has been screaming all evening (I really thnk it's the nappy rash that's causing her to be so upset.)