Instagram notification keeps coming back on iPhone?

I have an iPhone 4 with the instagram app installed on it. I have setup the app so that I will receive push notifications for if a person likes/comments on any of my photos. However, I'm still getting current push notifications from the app (which i want) but I also have a notification that appears with it from 4 days ago. It's not really a problem but its just bugging me.

I love instagram.

Hi, you could try maybe deleting the app and reinstaling it? Or just logging out of your account and log back in?