should i quit?

i have just been working for 3 weeks as new grad lvn in a nursing home.

and i want to quit because...

• i feel exhausted and worn out everyday.
  
• i dont get to use the bathroom eat or drink for 8 hrs because to the workload, ill get behind if i take a break so i pretty much clock out for break but work through it, coz technically nobody is covering you during break.
  
• i stay extra 2-4 hrs unpaid overtime just to finish my unending paperworks.
  
• just after work 3 weeks, my bp had dropped and i lost incredible amount of weight and i think i have uti now coz my side really hurts constantly for a more than a week now.
  
• i dont get benefits because im on call, but get called all the time.
  

i want to stay because...

• i dont want the one who got me the job look bad.
  
• my parents cant find work so i need a way to support them along with my sister.
  
• the pay is great but if i compute my salary with the actually hrs i work, its minimum pay.
  
• economy is bad, and ill look bad in my resume to quit so early
  

with is in mind should i quit? in you opinion.