What causes stringy sticky shiny nappies in newborns? My DS is 16wo (11wks corrected) & has had 5oz Formula this past wk- so he's been almost exclusively BF. He has had intermittent constipation & loose frequent explosive nappies since birth. For the last 6 days his dirty nappies have been way more frequent; from one every 2 days or so to 12/day. These have been explosive & snotty in appearance, which I've never noticed before. Not at all seedy like my 3 other BF DC's nappies. There may be one nappy a day with seedy bits, but that's it. He's been gaining weight well & isn't ill-no cold to explain the mucous. Any ideas?