Yep me again with the PFB anxiety.
DD is 4 months, had 2 drops of red blood in her poo yesterday. Go to GP who looks at her bum and says she sees a small cut/fissure, bit the obvious disclaimer to keep an eye out for intolerance or allergy. She was most thorough and rang the hospital who confirmed it was a fissure.
DD is fine in herself with clear skin and no belly pain. Soft torso. Eats happily, sleeps well.
So like an idiot I read a thread in patenting on CMPA and visit the website. So many symptoms!! 
Like all babies, she sneezes (sudden light changes, excitement and dust!).
She sometimes posset a little curdled milk (like once a day if that).
She grows slightly slower than average.
...but really she is extremely unfussy, loves her milk and sleeps well. She can go several days without crying if I'm on the ball with boob, nappies and Mr teddy bear.
It's just a sore bum isn't it?