Hi, Im an asthma nurse. About one 3rd of people stay the same with their asthma, one 3rd find their asthma improves and one 3rd finds it worsens in pregnancy. You should definately keep taking your inhalers during pregnancy, they can't harm LO, what is worse is uncontrolled asthma as LO wouldn't be getting enough oxygen so if you are having symptoms (cough, wheeze, difficulty breathing) or taking your blue inhaler more than normal you should see your GP. xx