Growth spurt and poop

I’m so frustrated. My baby is just over 4 weeks. We had 3 really good nights in a row and now tonight and all day yesterday he’s been a mess. Fighting sleep, cluster feeding, spitting up way more than usual, and seems so uncomfortable. And his poo stinks.

I’m assuming he has am upset tummy or maybe an allergy.

Maybe a growth spurt on top of that.

Anyway, I know it’ll be fine, but I needed to vent.