good evening, by the symptoms u have suggested , and by the previous history of asthma
u have had, i would suggest u to review with ur chest physician again, because chest tightness
, pain in the chest that awkward poking sensation in ur heart as u r describing may be due to chest congestion, so doctors examination will be grateful. it can also be due to gastritis
, but also to be a=on the safer side get a chest x ray
and an ECG done after docotrs examination. thank you.