Is there something wrong with my mead?

I started making a pineapple melomel a week ago, and the primary fermentation started up very fast and strong. However, yesterday I noticed that the bubbling from the airlock had slowed down quite substantially, and today it's even worse. I'm wondering, since I'm really new to home brewing, whether or not this is supposed to happen after the first week, or if it's dying for some reason. Any help would be greatly appreciated.