FWIW, I have to be on a dairy free diet also and my doctor informed me it can take anywhere from 2-6 weeks for the milk protein to completely leave your system and in turn take yor LO the same amount of time, so getting mucusy poop sometimes is likely to happen. It was not until 4 weeks after my diet started that the trace blood was not detected in his poop. She also said it was ok to ave wheat bread and cracker that contain milk and it is more important to avoid actual milk, soft cheeses, ice cream, yogurt, etc. they say it is more about the amount of dairy being consumed and as he gets older you can start to reintroduce it slowly as their tummys get stronger...just wanted to let you know what I have learned!