Poop change after 2 month shots

Kayla • Kai 🧒🏾💙 11/29/18, Baby Boy 2👶🏾💙 3/11/22

Hey ladies! My baby boy just had his 2 month appointment and got 3 shots plus an oral vaccination. His poop has been green since and overnight it was just a small green mucous. The dr warned me of a fever which he does have but nothing about poop. Is that normal? He also seemed to be struggling to get poop out. Usually it’s a few grunts and splat but he had a few grunts and nothing