So I walked into town earlier with the kids, and it took a bit longer than I had planned (long post office queues etc). On the way home DD1 (who is 4, wears pull-ups, and isn't toilet trained yet; and who has quite pronounced developmental, social and communication needs - likely autistic but awaiting appointment with paediatrician) started crying and getting distressed but wouldn't say what was wrong, other than she was 'wet' (although I couldn't see any obvious wetness on her trousers when I checked). By this point we were literally halfway home (about 10 mins away) and no changing facilities or anything nearby since we were just in a residential street. So I just told her we would be home in a bit and I'd sort her out as soon as we got home, but she was really wailing by this point. Due to her communication issues all she could say was that she was 'wet'. Got home and went to change her nappy and was horrified to see the sides of the nappy were covered in blood, where it had literally gotten wet and chaffed against her skin so badly on the way home. She's got huge blisters on each side of her leg and I feel just awful. I've covered each side in nappy cream and put some bandage over it, but don't know what else to do. I've never seen her as upset as she was when I got home and I had to try and clean her up and sort her legs out as she was so sore poor thing. The thing is I've never had this before, and can only assume, because Tesco have recently moved over to a new 'Fred and Flo' own-make of pull-ups that they are made out of a slightly rougher material than the old ones? Should I make a complaint to Tesco or chalk it up as just one of those things?