Has anyone ever heard of this happening to a woman's ovaries before?

Ever since last night at 5:30, I have had unbelievably terrible pains in my stomach. So when I got home from a field trip (I'm 13). my mom rushed me to childrens' emergency hospital. They felt my stomach and gave me some advil, and then told me to come back if the pain continued into the morning. So I came back, and they put an IV in me to fill my bladder in order for me to have an ultrasound to see if I had appendicitis. It turns it I had a cyst on my ovary which exploded, causing serious pains in my stomach. They knew this because my right ovary was bigger than the left as there was a fluid circling it. It also means that I will be getting my period in the next month or so, as I haven't had it yet. Has anyone heard of this happening before, especially to a 13 year old girl? Thanks!