I need answers 🙁

So i’m 11 years old and got my first period around June and had a light flow then and then all the other times they were super heavy flows. I was supposed to get my period on Sunday but I’m 4 days late. Even though I’m obviously not sexually active because of how young I am I’m still worried because my periods have always been on the day predicted, the day before , or the day after and no later. Instead of blood I’ve just been getting a clear, stretchy discharge. Can someone please tell me what’s going on or if this is normal ?