Took site down now it shows Apache Index

Hi

I host my site on hostgator and took the site down for awhile (changed hostname servers) so it wouldn’t run. Now that I’ve connected the site back whenever I go to the site I get an apache index with port 80.

I had someone redirect my site to my forum but it used to go to my homepage. I didn’t delete any of my content and I can still see all my uploads. I’m not sure where my posts and pages are.

But can someone please give me some guidance on what I need to do?

I went to my htaccess file and it looks ok.