My baby just got his 2 month vaccinations yesterday. He had a fever last night and I gave him…

My baby just got his 2 month vaccinations yesterday. He had a fever last night and I gave him Tylenol and it went away. But now he has yellow and green mucus in his stool, and even just poops mucus sometimes. I am so worried. I called the doctor and they said if he develops a cough or another fever to take him to ER, but they won't see him until Monday if it's just mucus. They think he is just congested and swallowing his mucus, but I'm pretty sure it's because of the rotavirus vaccine... 😖 has anyone experienced this??

Picture of my baby King after his vaccines 💙