What you described are very common side effects of injections and immunizations. It usually passes in a day or two. You can apply a cold compress to the injection site to alleviate the pain as well bring the fever down. However, if fever persists after days and goes beyond 39degC, best to bring baby back to the doctor. Also watch out for major side effects like convulsions, seizures, unresponsiveness and unconsciousness.
Here are the signs for teething: - drooling - irritability - tooth visible under gum - swollen gum - difficulty sleeping - turning away food - grabbing their ears. You can offer baby teether that you can put in the fridge or frozen breastmilk pop to ease her pain. You can also apply teething gel.