Thanks for your question on Healthcare Magic. I can understand your concern. Yes, you are right. Your child was having low birth weight at the time of birth. These children are at increased risk of infections, particularly lung infection because of lower immunity. And this kind of risk is there until age of 5-6 years. Her current symptoms are more suggestive of lung infection. So better not to wait at home and consult pediatrician immediately. She will need chest x ray and blood reports for infection. She might need higher antibiotic and other supportive drugs. Don t worry, with appropriate treatment, she will be alright. Hope I have solved your query. I will be happy to help you further. Wishing good health to your daughter. Thanks.