Diagnosed asthma but after 6 weeks pulmicort not working

Thank you for answering my questions!!

Symptoms: Chest tightness (behind the breast bone, mainly in middle), shortness of breath for five months, (no wheeze). Often worse at rest than when excercising. - The symptoms are more or less constant and sometimes climax into a panic/asthma like attack.- ventolin brings no relief and can make me feel worse.

Went to see chest physician and he diagnosed mild/moderate asthma from basic spirometry. Chest Xray clear - just too much air in lungs. Spent two weeks on flixotide but felt worse and have now been on pulmicort and long acting bronciodilator for 6 weeks but hardly feel any better at all, although my peak flow has increased a little.

My GP is not convinced that my problem is all about asthma as my peak flow 380-450 (Female 29) is not bad. Blood tests came back normal apart from one for H-Pylori which came back positive - I have been on antibiotics for this and PPIs for GERD (There is no indication that I have GERD but the doctor says
it is worth givig it a go)

Questions:

Where should I go from here? Would a CT scan be any use, what does this show? and ditto for a broncoscopy and the same procedure for the stomach (cant remember the name)

I am seeing my chest physican again on Tuesday is there any procedures i should push for; I am afraid that because my peak flow has increased a little he will say I am better, but am not

Are there any other asthma drugs could suggest to my physican that might help if the pulmicort/flixotide/becotide hasnt?

Are there any specific drugs for chest tightness?

[National Jewish]

Generally testing for asthma starts with a simple breathing test called spirometry.  This test provides detailed information about how your lungs are working.  It will show if there is obstruction in your airways.  To really test for asthma this test may be repeated after using a rescue inhaler, like the bronchodilator Ventolin