Heaviness & Pain in Chest and Back Pain.

I am having Heaviness and Pain in Chest & Back since last 16 days. Initially i consulted a doctor online 10 days back, he prescribed me Deltone 60 and Sucral O syrup, i took medicine for 6 days but heaviness is still there in chest and pain in back and chest pain increases when i used to take spicy food, so i stopped taking such food. 3 days back i consulted a doctor physically and undergo ECG, ECG was normal and doctor told me it is due to muscular pain you are experiencing pain and he prescribed me Pantotab DSR, Mega Flexon and Samion CD3. I am taking these medicine since two days, still heaviness is there in chest and back pain. Its been lockdown time and after so much difficultly i get an appointment with doctor in town, since i live in small village. Plz suggest what to do??? During normal resting and exercise i am experiencing heaviness in chest and back pain. I have no any past history of any medical problem. I am a non smoker and non drinker. Plz suggest me your advices.