HELP !

When my baby got his first round of shots 3 days later he started crying non stop when it would come time to nap time . He would refuse to eat and nothing seem to calm him down he hated being laid down, this was only at time of nap time other than that he was fine ! & when it came to bedtime he would be fine . this lasted for a whole week Peditrician just said to give him rice water & pedialyte . Now he recently got his second round of shots . And he got diarrhea and a fever , it has been 6 days and he started non stop crying again

Has this happen to anyone ???