Is it normal i can see my future dark and i can't do anything?

Hello.

(TLDR: MBA in finance very skilled, left job, working 7 days a week with no pay in father's pharmacy)

I am almost 30 year old, Graduate in commerce and MBA in finance.

Two years ago I was working in an accounting software development company as accounts development manager with a good pay, a car and an apartment on 16th floor.

One day I had a call from my mother asking me to wind up things and come home as my father is not eating anything and she's already that something happened to him.

Forty six days later I was at home.
My father is a pharmacist in a small industrial town.

For next six months I worked in his pharmacy while he could rest and recover.

Another two months I worked in his pharmacy so that he could visit his mother and brothers.

After he returned I wanted to get back and apply for a job (preferably in Amazon) but I had to stay cause he wanted to build his house.

I was working in his pharmacy and looking after the building which is expensive enough to deplete all my savings.

We had a fight over not wasting money on things that we don't require which ended when he reminded me that I am living cause he is providing for me and I left.

I was on train station (no money for flight) when I got to know my mother had an anxiety attack and she is unable to breathe. I came back. She told me she will die if I leave.

So today (Saturday) I worked in his pharmacy and delivered supplies for paint. It's Saturday. Tomorrow I will be working in his pharmacy and will have some other work during lunch.

I don't get paid and I fear cause I began to believe that food, bed and hot water is enough to pay for my work.