Hi darkpurplesecrets.

it sounds as if you are experiencing anxiety/panic attacks.
you mention that you have an inhaler, it is difficult to say what may be bringing them on, ,,, are you asthmatic? and if so ,for how long?

panic attacks are very scary, and usually a symptom of underlying fear[s], " fear of " something that you [as yet] are unable to deal with,,,,,

could you say a little more about it ?

i have had a lot of experience of this, and it can be a very traumatic and dissabling problem

alevin