My daughter just threw her first horrible fit in the store. She eventually got to a point where she…

My daughter just threw her first horrible fit in the store. She eventually got to a point where she would just scream. She screamed the whole way home and I finally just had to put her in bed. I'm not sure if she is getting sick or if she just needed a nap but I'm at the end of my rope. I'm so glad she is finally asleep and the screaming has stopped. I feel like such a bad mom. I've never had her act out of control like that. She hardly ever cries.