One day late

I was supposed to start my period yesterday. I was soo scared that I was going to start it while I was at school. I was asking my friends if there was something on my butt luckily for me that there wasn’t. But yesterday I felt like I was about to throw up. It was so weird bc I had never got that feeling when I was about to start my period before. My friend got hers today. I was like when is mine coming.Bc it was supposed to come yesterday,but anyways Lucky for me it came when I got home.