Comment Issue!

For the past few days, I'll look through my notifications, and it'll tell me that I have a new comment, but when I try to see it, it won't let me! I've tried clicking on the individual post, clicking on my Dashboard, and I've tried to look up on my blog.

 

Now, it says that I have seventeen comments for one post, whereas I'll just have five . . . ?

 

Is anyone else having this problem at all? It's starting to annoy me so much!