Going by your symptoms it doesn’t look anything significant but your loss of appetite needs evaluation but probably can wait till lockdown is invoked and things normalise

Without fever no corona Take tab alprax .25 in night for 5 days you will be ok

Just get an ECG and send me the reports

Since you are young and the pain in the right side of the chest, less likely it’s related to the heart. And also you are having pain in the right shoulder. Most likely it is due to Muscular Strain. The weakness and loss of appetite could be due to other reasons. Not to be worried about Corona as you are not having any fever. If you are having any contact with a confirmed Corona patient or a travel history abroad, then you need to worry about Corona. If you are having any fever, dry cough, breathing difficulty then visit a hospital or a clinic which is open for a review.