S.P.
Hi I had a similar thing happen to my oldest son. It started when he was a few months old with bronchiolitis, so we thought. He was in and out of the Drs office and hospital from about 6 to 9 months. About 3 times total. They tested him for whooping cough and everything. He had to be transferred to Children's hospital and put in an oxygen tent with breathing meds. Finally they referred us to a pulmonary Dr. Come to find out he has asthma. He is 10 now and he still is on an inhaler as needed. So I would really suggest you ask for a referral to a pulmonary Dr. Hope it helps.