@Teanna_1996 Have you tried changing among fullscreen, windowed, and windowed borderless? Have you changed the in-game resolution? Even if you have, delete options.ini (located in Documents\Electronic Arts\The Sims 4) and try again.
If that doesn't help, please run a dxdiag and attach it to a post.
https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
Or, if you happen to be on a Mac, please post its specs, as described here:
https://answers.ea.com/t5/Technical-Issues-Mac/READ-FIRST-Sims-4-Mac-Help-Guides-and-Troubleshooting/m-p/4612396#M162
