I know it is rare in a BF baby but my daughter has it!! She is in great pain with cramps and has passed a small formed poo which took alot of effort.
I think because it was so hot here yesterday she fed every 2 hours but also had gaviscon as she has reflux and had more than she normally would so it has constipated her, i have tried to give her some water but she won't take a bottle so very difficult to syringe it in !!
Any other ideas?