Dude, if you are OD'ing on your inhailer several times a week, you definitely need to go back to your doctor. There are more serious issues here than just not sleeping. You are abusing and becoming dependant on something and the Doctor needs to be aware of it.
yes i would say you are..when everything is quiet at night, the day is over..you are alone with your thoughts and the silence....then your anxieties will come out. It's unpleasant, inconvenient, but not dangerous...try deep breathing exercises, it sounds lame, but it truly does work..you have to work on slowing down your breathing