Gardasil
"I'm 18 years old and just got my first one today along with two other shots which were required for school. Hurt like hell compared to the other two. Maybe less than a minute after I started to feel dizzy, nauseous, vision blurred, had difficulty breathing, threw up... Nearly fainted, had to be brought to a bed via wheelchair. Probably the worst I have ever felt. Hours later, can barely move my arm without feeling pain, even though the other arm (which got two shots) feels fine.
I'm not going to say no one should get this - fainting is obviously better than cancer. I personally would not do it again, especially considering I do not plan to have sex later in life."