Replying to My internet problem

So I was on porn last night, and I wake up this morning and start typing a website that starts with g and this website appears in the dropdown thingy, so I type some other letters in, and sure enough, for half of them, websites appear. Now I've tried everything to get rid of them, gotten rid of cookies, deleted all offline content, cleared my history, and restarted my computer a couple times but these sights are still there, does anyone have any advice on how to get rid of them?