Work wanted me to come in on my days off while I am extremely sick and they messed up with scheduling my holidays and have now taken those two days that I already had off from my holiday

Let me start this off by saying I have never been in a job before, sort of. I've worked for family and places that they work to earn money and build my CV as well as work experience for college. This is my first time working for a company that I got hired by and i work part time.

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I'm 18, I struggle a lot with physical health due to endometriosis so luckily this week I've had off because my work gave me a whole week for some reason. Due to the fact on the wednesday I had a maths exam and could not get to work because I don't have a license and my mom drops me off, I told my work that i need that day as holiday and they wrote all the dates down first day I started.

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I got extremely ill on the Tuesday because I always get violently ill before my period starts so I was throwing up and passing out, the whole show of endometriosis fun. When I went for my exam on Wednesday they had me in a separate room because I was so sick, right before I go in I get a call from my boss so I answer and he's asking me where I am, I said I'm doing my exam and he said "but you said it was the 11th?" No???? I state in a very ill voice that I don't know if someone wrote the wrong dates down or something but thats not what I said and it ends at that.

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Later that evening I get a message from my supervisor asking me to go in the 11th? I message that I'm super ill and am not able to go in at all but ill see in the morning. She says they're short staffed and could need the help. The next day I'm fast asleep because no way am I going in while like this, mind you I work housekeeping so I would definitely pass out or be a health hazard from the throwing up. I get a message asking if i will be in but I don't see it till later because I'm so ill I was sleeping all day so I messaged apologising and she didn't respond.

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Now the 12th comes, STILL SCHEDULED OFF BTW. My supervisor called my dad because they're friends looking for me? I message when I wake up and ask her if something was wrong but it gets left on read. I only just saw i had a missed call from my boss too but it didn't show up on my notifications and its way too late now lol.

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I have work for five days in a row now and I decided to check my holiday days, I knew I had 10 days left because I took 6 days for a few prebooked holidays I had scheduled and now suddenly its 8.5 days??? I'm so frustrated, I'm not a lazy person when it comes to working i really enjoy cleaning but I hate it when I have coworkers or a boss because I get constantly interrupted while working or on my days off I get this?

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I thought i would enjoy working because I've loved working so far but this has me crying because I feel like ill never find a job that understands I'm disabled by my period and by many other health issues or mental troubles, this isn't even my fault either I feel. Am I valid for wanting to just quit and wait till I have a drivers license to work so I can do something else that gives me more freedom or something? I just want advice because I'm so lost and I don't know what to do, I don't want to go in tomorrow anymore because this has gotten me stressing about what if I get told off for no reason when I was scheduled off. Any advice would help and if clarification for anything is needed I can answer!

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