Is it normal to hate my job to the point i stress about it?

I'm 21. I graduated from culinary school last year in June. The job I have now is my first job and I've been with it for almost a year. I like that it's a full time job (which is hard to get in the state I live in) and I do like some of the things I do in my job.

But, I almost always get stressed out from my job every night.

I work in the kitchen of a supermarket doing things like deli work and sandwich making. After almost 5 months of working here, I had to fight for a raise when I found out people with no culinary experience- mostly guys- were getting paid about $9.50 while I was making $8.75 or so. My job can be fun when everyone is nice.

But, a lot of things have been happening. For instance- customers call me retarded or dumb when I make simple mistakes like cut an ounce more of meat than what they wanted.

I have co workers who are favored more than me and I work hard to do my job. I've had a disability in my arms(which isn't bad enough yet to get disability but is bad enough that I needed 2 surgeries) for 10 years now. I get treated like crap for asking for a break after scrubbing an oven or wanting to use muscle rubs (which I wash my hand after applying each time). Yet- I have coworkers who just got injured and they're allowed to wear braces, do next to nothing for work and complain about their pain. None of them have had surgeries. BUT because their injuries(aka tendonitis) occurred at work- they get favored over me who has suffered for years. I've just been told I can't use muscle rubs or wear my braces (which doctors have said I could use to make myself feel better throughout my surgeries) because the chef is superior to me and doesn't like me using them in his kitchen.

I've got coworkers who can pull out their phones in the kitchen and text. Yet- I can't even keep my phone on me in case of emergencies?! I've got co-workers who get favored and get offered better shifts or cooler positions because they hang out with people!

I've gotten in trouble for helping customers and asking people questions cause I "interrupt" people and yet our main motto is "Customer is King!"

I got kicked off of a cooking position cause a co-worker who had been there for longer than me got injured while wrecklessly driving and they felt sorry for her and felt she should be babied.

I get made fun of for ACTUALLY doing things like sanitizing counters, washing windows, and doing extra work. I've even gotten into trouble because I "did too much cleaning". Yet the people I work with don't clean up much cause they feel "why should they when they can do nothing and get paid for it?".

We have really bad turnover rates- and I'm not even praised for staying when we've just lost 4 people!! I request a day off and they give me that day and ONE of my days off yet it's the opposite for everyone else! I get called in on off hours and they don't even care when I ask for a shift that works around doctor's appointments so I can FIX my disability.

I always come home angry and stressing because of how I get treated. Yet, I don't want to leave my job for fear of having no money, a part time job, and looking bad. Is this normal?