Hi Doctor
Thanks for your question on Chat Doctor. I can understand your concern. By your history and description, possibility of acute worsening of asthma is more in your case. You are having allergy, and you are not taking inhalers regularly, so worsening of underlying asthma can cause breathlessness, chest pain and tachycardia (rapid heart rate). So better to consult pulmonologist and get done1. Clinical examination of respiratory system 2. PUT (Pulmonary Function Test). PFT will tell you about severity of the disease and treatment of asthma is based on severity only. You may need regular inhaled bronchodilators and inhaled corticosteroid (ICS). Oral combination of antihistamine and anti-allergic Chat Doctor.  Don't worry, you will be alright. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.