First of all as a writer you don't have to take stress Coz when you are in stress words don't come out and writing is a very creative process.
Secondly you don't have to reply for all the comments because it's very tiring. When I started writing I didn't get too good of a response but than people get to know my work and than they liked it. Even I can't reply to all my comments(I tried to reply but there's always lack of time)but I replied to my pms.
There are few readers who really appreciate your writing skills and a writer needs what just few words of appreciation. So don't take tensions. Your work is APPRECIATED.
Take a few days off and relax and concentrate on your health and studies. People who love to read will for sure come and read whenever you will update. And trust me there are people who wants to read in any time of life. So don't take a troll on your health.
When your mind is all messed up than you can't write properly , so don't stress too much.
I know how it is to live alone in a country like this on your own away from your loved ones. We all are with you and my prayers are with you
Come out from this stress with a happy and cheerful face. We will be waiting for your updates , honestly.
Take care and be happy.