WordPress site was running fine then, got turned into an ad page. Plz help!!!!

Hello everyone,
I was able to access my wordpress blog via the actual domain name and wp-admin (https://beautybloggin.com/wp-admin). The day after I was playing with the SEO tools and the whole Google Master Tool, my website suddenly turned into an advertisement page. I was freaked out and still am…. ?? I have no prior knowledge to the phpadmin, SQL stuff, etc. I am completely lost right now, don’t know where to start and don’t know how to fix it. I tried contacting the hostgator (the host that I’m using) live chat and they submitted the ticket for maintenance already but nothing has improved. I’m running everything on Mac OS X operating system. I already tried googling and going to Barnes & Noble finding more resources, but none of that help. Can somebody pleaseeeee help me??? I’m just super-super lost right now ??

Any answer or help would greatly be appreciated!
Thanks.