I have had a ovairan cyst rupture last week, and your symptoms sound like you may have one as well. I think you need to get an appointment and see your doctor and tell them about this, it is very dangerous and can cause serious problems. The pain from a rupture can last up to two weeks. I was rushed to the hospital three times last week because of mine, and ended up having to have a catheter put in, because it ended up shutting down my bladder from the fluid.
Please go to your doctor this is serious, it can start as young as you start your period. So no age is to young to have cyst, and if you are stressed this is double the risk of getting a cyst. Thats why mine ruptured, they may need to do an ultrasound to see if you have one.
But I seriously think you may have a cyst or ruptured cyst.
Keep me posted good luck and I hope you get to feeling better.