Hi Melissa,
Thank you for reaching out. My name is Leo, a user just like you. I'd be happy to help you with your concern.
May I know which Microsoft Office version you are currently using? Have you also made sure to turn off the paragraph marks icon? Here's the icon:

What are the changes that were made that might be causing the issue? Do you use any add-ins? If the suggested option didn't work, I recommend closing Word, then opening File Explorer and navigating to C:\Users\user name\AppData\Roaming\Microsoft\Templates. Next, delete the normal.dotm file. It will recreate itself after you restart your computer. Then, check if it helps resolve the issue. In case the issue still persists, please don't hesitate to let us know.
Your understanding and patience will be highly appreciated. I hope I provided a helpful information regarding your concern! Let me know if you have any further questions. Be safe always!
Best Regards,
Leo