My niece is 9 months old and since 2 days she has become very cranky, weak and has reduced her food intake. We are assuming that this is because of teething, but just wanted to check if this is something for which we should go to a doctor or we its normal. When i touched her gums I could feel they harder but not sure if that's something i can use to conclude that she is irritated because of teeths coming out. Can someone suggest what needs to be done here?