Anal cancer please help me!!!!!!?

[regina falange]

I DONT WANT TO DIE PLEASE
i just posted this question n someone said i had anal cancer

this started fri n is really uncomfortable. I woke up and my butt hole hurt. I didn't know what it was from. It's been hurting since then when i clench and just all around soar.
Today it not only hurt it felt like i had to poop all day
i have regular bowel movements and all. I looked in the mirror and it looks like theres a small white bump at the top of the BUTT HOLE not crack but the actual hole. I believe this is the source of the soarness but im not sure being that ive never looked at that area before.
i will get it looked at by a doctor (im going next sat to the gyno cause im having late/non existant periods)(no pregnant)
anyone have this happen any info please
NO std, im clean and so is my bf
no anal
do u think it is will it go away on its own
please answers im uncomfortable 19 yr old girl
it just popped up over night do you really think it's anal cancer
IM SCARED!