I'm very scared, what if I searched something in google but something else pops up?

I was searching google for porn 18+ and even typed in "teen 18+ porn" and the first link was named "hot18teens.com or something like that" and when I went on I think I saw someone that looked too young so I left really quick (less than a minute or so). Btw im 18 so its not like im some old perv trying to find girls that are 18 years old, can someone please give me some info on this subject, I got my whole life infront of me and I don't want a record for google screwing up on a search term. Also in the past I've seen girls around 18 dancing on youtube and such, this can't get me in trouble either right? Im a very paranoid guy and just want some closure. Any responses would be appreciated and I don't want to contact the cops because I don't want to draw attention to my family and have them know I look at porn. So if someone can check out this site and check its legal standards or tell me how the gov't works and ISPS and such can you please get back to me. Thank you in advance.