@pamelacelia, the recommended age for HPV vaccination is 11-12 years old for girls and boys in the US, Canada, and Europe. It can be given early, starting at age 9. Five years old is younger than typically recommended.

The Center for Disease Control published this series of frequently asked questions about HPV Vaccine Safety that may help to answer some of your concerns https://www.cdc.gov/vaccinesafety/vaccines/hpv/hpv-safety-faqs.html

Like you, I wanted to get the facts before getting my daughter vaccinated. For me the benefits far outweighed the potential adverse effects. My daughter was vaccinated at age 12 and she did not experience any side effects other than slight tenderness where the needle was given. She is now 15 and there has been no further side effects. I'm glad that there is something I could do to protect my child from some types of cancer.

May I ask what country you live in?