Ok so I am 13 and I was in school. Around lunch, I was laughing really hard at my friend. Don't you have those moments where you laugh so hard you kind of tinkle? (That sounded childish but whatever) ok so that's what I did, so I went to the bathroom to fix it, and instead of a little pee, I saw a light pink/red  watery mix. I hadn't ever expirenced  this before, but my friend was on her period and gave me a panty liner just in case, the day went on and when I got home, I checked it, and there was nothing. Am I going to get my period? If not, what was the other stuff?