HELP...ANYONE....PLEASE!!!!!

My periods are irregular, it comes one month then skip another(came September,skip October & cape November) I had sexual intercourse over the thanksgiving break. I’m not sure if I might be pregnant or it’s just the month to skip. I’m too young right now to have a child. I’ve seen I can use Vitamin C to have miscarriage.....what will you guys recommend ? I don’t want to tell my parents & I want to get rid of it without going to the doctor. Anything to have a natural miscarriage?