I've been following the cleaning directions on my cloth diapers when I wash them. However my LO is getting quite the red bottom. I'm not sure if it's because of the diapers or something else. I use free and clean detergent but I've been line drying them inside and not putting them in the dryer or outside on the line. Any ideas as to what could be causing the redness? I should also mention this has only been happening the past month. I haven't had any previous problems and he's been in CD's since summer. Thanks for any suggestions.