I would also like to know can they make u missed ur period

You are being given a basket of bullsh*t by the pharmaceutical industry. they are literally scaring you into the harmful vaccine (Gardasil). Don't do it!!!
Only 4/100,000 are effected by uterine AND ovarian cancer.

Ovarian cysts can make you miss your period, especially if you have the condition PCOS which just means you have many cysts. Having PCOS puts you at higher risk for developing ovarian cancer but simply having a cyst does not mean that you have ovarian cancer. as long as you get your yearly PAP test you should be okay.

If you have an ovarian cyst you would more than likely feel pain by your waist. you could also have very heavy flow on your period. Cysts are rarely melignant most of them are benign like 99.9% of the time. and if you wanted to know if it was cancer or not go see your gynecologist. just make sure you keep up with your monthly body inspections. it may sound gross to feel up on yourself every month, but it helps a lot. Make sure you check for bumps and anything out of the ordinary.