Do these heels fit?

So I know my shoe size and everything lol. But I’ve never wore heels before. I recently had to get a pair of heels for a wedding I’m in and the woman at the shoe store assured me the ones she were giving me were my size and everything. I told her they felt a bit uncomfortable but she told me it was bc I hadn’t worn heels yet. So I was like okay you’re probably right and I bought the shoes. Well I got home and put them on again and I noticed that the side of my feet hang off the shoe? Like I knew the center of the shoe was thin but I didn’t notice it being that thin. But the woman looked at the bottoms of my feet and told my they were right? So like, are they? Or should I take them back? I feel so stupid rn🤣