I would look into autoimmune conditions. I have Lupus and if I experienced what you just described it would be that the over work led to a flare up (fever). It's quite common in autoimmune conditions.

You mentioned being an older sister. Are you living with your family and caring for your younger siblings now? That happened to me and many of my physical and psychological needs were ignored or downplayed as not important. It’s called “emotional parentification” Talk to someone! You are worthy of the time and attention you need to figure out your health!

@pond I was recently asked to move into my grandparents house, and then my grandparents moved into assisted living. I'm paying rent to help pay for their Assisted living. Ty for encouraging me. Both of you. I found a new doctor I go to on Thursday and will ask about autoimmune conditions. I was looking into Rheumatoid Arthritis, and have 10 of the 11 symptoms, but I'm not gonna self diagnose. I WILL ask my doctor to take a look at the possibility tho lol