My daughter is 3 months 8 days old. from last three days she is more cranky and crying alot, and also she is not feeding well. She is sleeping more without feeding and she goes 7-8 hours without feed. whenever I try to feed she is crying badly. first she feed in 4-5 hours but now she is not feeding properly. after 7-8 hours she take only 5 minutes feed. what to do? is this normal? or else should I go to doctor?