Welcome to this forum.
Your symptoms are suggestive of a hypersensitivity
Frequent complaints of the above symptoms are suggestive of an allergen in the form of food or cosmetics or drugs etc. I suggest you to get Allergen testing with the help of an allergist. This helps in identifying the allergen and avoiding it altogether.
For your current symptoms you can take an over the counter antiallergics / antihistamines like Loratidine
The warning signs are voice change, breathlessness and gasping for air which indicates the blockage of the upper airway. Please call the emergency immediately.
Hope it helps.