Go to the Doctors. Mackenzie had 'asthma' like symptons when she was 5 months old however my Doctor said they don't diagnose asthma until they are 9 months old due to their lung development. Our Doctor still put us on a preventer and also suggested to put a puffer in the cupboard incase she ever had an attack just to be safe. The preventer seemed to help and Mackenzie is now 16 months old and hasn't had any symptoms since around Christmas last year.