Standing Overtime: My Daughter is Sick and Constantly Fussy

I guess every time's gonna be okay. But, I'm not sure. There are several moments that make me collapse. When is it? Yeah, it was while my child was sick. On those days, especially at night, I often have no sleep, like yesterday until today. My third child was sick. She got a high temperature, coughing, and had a cold. Automatically, she doesn't sleep on her bed. So, I must carry her up. While I carried her up and felt she had slept, I tried to hold onto her bed, but she accidentally woke up. Thus, I had to get her up again until the day after. It's been a long time, I must stand and go around my house. Was I tired? Absolutely, but for the sake of my love, my child, I had to do my best until she got well. I usually stand for a long time during my activities in my ex-office. I have had to stand since I started teaching.