Babysitter wanted for childcare in Toronto

Hi We are a family of four. My elder son goes to school and daughter stays at home with me. My husband has a job, he goes to work at 8 and comes back around 6. I dont have a regular job but Im applying and have to go for interviews occasionally. My daughter is 3-1/2 years old right now. She is talkative and likes to color. I urgently need nanny for tomorrow as I have a health exam that can take upto 4 hours. I will be needy a nanny atleast twice a week from now on.