I'm a 15 year old girl who has been having periods regularly for ...

I'm a 15 year old girl who has been having periods regularly for the past three years. A few months ago, I went into the doctor to get my first Gardasil shot. I was due to get my period a few days after that. And now, I am due to go back for my next Gardasil shot in about a week..It has been four months sense I had a period. My mother has decided to make an appointment for me to find out why my menstrual cycle has suddenly disappeared. We think it may have something to do with the Gardasil shot, but the nurse we talked to on the phone said that this was unlikely, and I should come to the doctor to find out the cause of my mysterious missing menstrual immediately. I beg you not to get these shots yourself, nor force them upon your children. I'm not sure whether to hope that it is Gardasil that is causing me these problems, or that it isn't. All I'm sure of is that I'm not taking the risk with the next two shots. I'm desperate for answers and something to fix my problem.