I’m so embarrassed !!!!!😭😭

So I woke up this morning (on my period) feeling good. thinking that my period was over because I didn’t see anything on my pad the night before. So I went to school with a full Canadian tuxedo ( Jean jacket and jeans) feeling super cute. I also do cross country and we had practice tonight so I went to change in the bathroom, I take off my jeans and I see a huge period stain. I had notice earlier in the day that people were staring at me longer than usual. This was the first time this has ever happened to me, and the worst part about it was that my crush was behind me in all of the classes that I was in, and also that none of my friends told me.