Are you getting confused by the small curated stories being shown on Twitter when you thought you were going to get a series of notifications?
Twitter has sneakily switched the locations of the Moments and Notifications tabs, probably causing you to accidentally click on the Moments tab more than once over the past few days.
Thankfully, it's pretty easy to switch the two back using a Chrome extension. Of course, this fix assumes you're using Google's Chrome Web browser, but hey, if you're not, you should consider switching, anyway.
Twitter's Moments is basically a place where top tweets and subjects are highlighted, with Twitter calling the section "the best of Twitter."
The extension is pretty basic, and simply switches the two tabs back around. You can head here to download the extension for yourself and return to not having to think about which tab you're clicking on.