Asked for female, 37years old from Ghaziabad
So allergic bronchitis will have variations with climate change and exposure to allergen.
You might be having spring season related exacerbation.
You might have to rule out bronchial asthma
which is why the formetrol inhaler helped you.
I would advise you to continue ti take the same
and add mdi duolin 2 puff wheneevr you feel chest tightness. And continue 3 times a day in such an event.
But you need to visit a doctor and do some basic tests like cbc to rule out eosinophilia and pft to see for asthma.