Rotavirus oral vaccine

Hi moms, can share with me your experience after baby got 1st rotavirus vaccine please? Mine got his in the afternoon and was ok. We went home, changed and fed him, he fell asleep for 3 hours from 7-10pm. When he woke up for feeding at 10pm, he cried and screamed soooo loud after feeding, he was in so much pain and we didn't know what to do except to comfort him. He fell asleep few mins after we comfort him. Part of me regret taking the vaccine. I'm so worried it'd get worse.😔