Thanks for your reply. Yesterday was Diphtheria and Hepatitis B vaccine only. Rotavirus vaccine was given on fifth of this month, and we had no issues then. She does not have a fever, but she is drowsy and refusing to suck. She sucks for two minutes and cries. She takes 15 ml with the spoon and sleeps off. Is it possible that the position of feeding in an issue? I gave her my finger and she sucked on it, but refusing to suck my nipples.