Maybe you should copy and paste your original post to the medical subforum as you might get more specific advice there. Also have you called the Asthma UK helpline on 0800 121 62 44? When you call that you get through to asthma nurses who are a marvellous help, I know this from having called them myself a few times.
Has your doctor refered you to a hospital specialist? If your asthma is not well controlled it sounds like you need further help.
But definitely give the helpline a call. Good luck.
Edited to add that I see you've already posted this in the medical subforum. Good. Please do consider calling the helpine. FWIW my own asthma is worsening too and you have my sympathy.
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