Period leak

Today in my last block,near the end of the day, I sneezed and felt my period. The teacher was in the middle of explaining something and I didn’t want to interrupt. So I couldn’t go to the bathroom right away. 10 minutes from the end of the day I asked and went to the bathroom. When I got up, there was a stain on my chair. I rushed to the bathroom and I was covered in blood. I was wearing black leggings so you couldn’t see but I still tied my jacket around. I made a makeshift pad, cleaned up and left. Everyone else had stacked their chairs so I stacked mine too and it was on the top of the stack. I feel so bad and so embarrassed. My teacher, who’s a boy, probably knows it was me as well, because I was rushing to the bathroom, and now I really don’t want to go to class tomorrow😣