Baby poop after immunisation jab

Hi mummies, My baby is 2 and a half months now. My baby used to poop everyday (few times a day) but after he had his 2nd month immunisation jab, we noticed that he doesn’t poop as often. He is on full breast milk. Now, he only poops once every 2-3 days. Is this normal? #advicepls #firstbaby #1stimemom #justmums