If you don't believe in religion or anything then to YOU, you won't be going anywhere. Whereas if you do believe in a religion then I'd say NO you are not going to hell but you could.
Now I am nobody to tell someone where they'll be going when they die but if you repented and were really sorry and shameful of your deeds then surely God would understand and you would be forgiven. But if you do the same again then obviously you can't be easily forgiven. But if you feel guilty then that's the first step.
And generally, being in porn... Most people would scrunch their noses at you anyway. Its not a done thing.