AIBU to think this may be more common than is recorded?
When I was breastfeeding in early days (I think 1-2 weeks post partum) I had a couple of episodes within 2-3 days lasting 1-2 hours where I felt perishingly cold and was shivering uncontrollably. I may have had a blocked duct, possibly even mastitis though it wasn't obvious, the first time I couldn't get warm despite toasty clothes, sitting pressed against the radiator etc.
Second time I got in a hot bath which helped me feel warmer at least!
I've always wondered if it was stress related but it felt like how people describe rigors. Has anyone else had similar but not got more unwell / needed antibiotics?