is my foreskin to tight?

well ive seen on porn movies and stuffs and read you can get your belend/head of it out of your foreskin and i wna try it but when i go to i sorta fell sick whilest trying and i can get most of it out but then i fell sick and stop lol is it only me? or does everyone fell that way when you first do it? it also fells a little tight when i pull it back... so yeah, isit like that for everyone when they first do it?

p.s im 16