Working and going to school full time and I feel miserable

Hey y’all, I’m putting this post in here because this is where I’ll probably get the most responses.

Well, idk if miserable is the correct word but I just feel tired and worn out. I am an LPN/LVN at my local hospital. I work night shift and I go to school Monday and Wednesday in the morning for like 2 hours and on Friday from 8-1230. I go to work Monday, Friday, and Saturday night. Sometimes I work for days a week. I did this last semester since January and now it’s May and I am tired. I feel guilty if I express my feelings because I don’t have any children and I stay with my parents. So I feel like I shouldn’t complain because people who have that can do it. Sometimes I don’t feel like eating or getting out of the bed for the day sometimes. I am getting sick more often. Right now this is my third time getting sick. Within a couple of months. I’m trying to get into the nursing program but I have to pass my entrance exam first. Idk if I could take this any longer. Idk if it’s just night shift itself. I thought about day shift job or quitting full time but idk. I don’t know which way to turn. Plus I pay out of pocket for school