Shouls I get a hysterectomy because of abnormal cells on cervix? I'm 20...?

I've been battling pre-cancerous cells on my cervix for 2-3 years now. The culprit of the cells is the HPV virus. I had surgery 2 years ago, but the cells have returned. The doctors said they wanted me to come back in 6 months to check on the cells, but I'm frightened that they have turned to cancer, or the cells have spread or something. I haven't had any kids yet and would LOVE to, but I don't want to deal with this HPV anymore and having to keep getting procedures done until my cervix is either gone, or way too weakened to support a child. So should I just get a hysterectomy to avoid eventually developing cancer and getting procedures done? Will the cells really keep coming back? Why do people say that the surgery you get to treat the cells usually help with the abnormal cells not coming back and mine have? Another thing, since I contracted HPV 2 years ago, I have had unprotected with 4 guys. Do you think I could have caught another strain and that's why the HPV is showing positive and abnormal cells are forming again? Please help I've been crying my eyes out all morning and all I want is to hear something encouraging...