Shair,
do you sometimes experience shortness of breath with your symptoms when walking? I get the pressure Danny describes and sometimes even pain (in the lungs?) with each breath.
The tickling/prickling sensation in your throat is from the acid coming up & irritating it. Whether or not you actually taste acid does not matter. Some people do not taste any acid (especially when taking PPIs). Have you had yourself checked by a doctor? If not, you probably should.
FG