Are dental crowns supposed to look and feel bulky? (Photo)

I had a root canal done recently and got a crown. It's my first crown and I'm not sure if they're supposed to look this way. I feel like the crown itself is too high above my original gum line that its somehow pinching my gums. I also feel like it's a huge difference between my other teeth and original molar. I went for a checkup and was told that it was fitted to the size of my molar, and that my gums are inflamed because I haven't been flossing.