I have a dermatology appointment today, husband can't go with me because he had to take up someone's…

I have a dermatology appointment today, husband can't go with me because he had to take up someone's duty. So it will be me by myself with my son and Nobody to watch him. If I have to reschedule this appointment because my husband had to pick up this chick's duty I will be one pissed off person I have been waiting on this fucking appointment since may!!