Site prolly hacked, help?

I just noticed that when you google my blog spin the disc and some keywords, it’ll lead to some spam sites. the url is https://spinthedisc.net and the main url redirects normally, i guess it’s only through googling. What should I do? I’ve got a backup of my images, theme and xml, should I delete everything and backup or can i try to remove the thing myself? Or is it some problem with my host or SEO?