site been hacked

Hi

I’m busy working on site, which is still under construction. ive just gone back to finish working on it, and someone has hacked my site.

i can still access the wp admin, but the minute i try access the site to customize it it shows spam.

i have made the site live https://www.elhockeyacademy.co.za and i am using the enigma theme.

if someone can please tell me what i need to do to remove the unwanted spam. but also to know what to look for in the future if this happens again.

i know its more than likely a file or a code that was inserted somewhere, but i could be wrong……..

thanks