Can anyone tell me if you receive updates when a post you started gets replies on it? or do you just have to login and keep checking on to see if anyone has responded to it?

"no" then "yes"

I guess I should have been more clear. By updates, I meant are you suppose to get emails telling you someone has replied to your post? I am not currently getting them, but didn't know if I need to set something up on my account??

No, no emails. Just keep checking back here.

I guess I should have been more clear. By updates, I meant are you suppose to get emails telling you someone has replied to your post? I am not currently getting them, but didn't know if I need to set something up on my account??

You don't get emails saying that someone has replied to your post. You can set up an RSS feed which would probably be the closest option to an email.