Endless Loading Screen on Mac

I've had no issues with loading my Sims 4 game all year-until last night. Out of 3 times I attempted to load the game yesterday, only once was I able to get past the main menu into a world. But when I tried to load into a lot, the game got stuck on the loading screen. Today, I can't even get past selecting my save file. It sticks on the loading screen  immediately after that. I'm getting really frustrated because I was in the middle of recording a Let's Play and this is holding everything up. Here's what I've already tried: went through mods folder (nothing outdated or corrupt as I triple-checked everything), deleted my local thumb cache file, and deleted all last exception field before launching. I'm trying to avoid moving the game out of the documents/electronic arts folder to force a new user file, because I had to do this once before and it caused me to lose a lot of progress/files or have things become corrupted. If anyone has any advice, I'd really appreciate it. I'm open to troubleshooting anything else that won't risk save file loss or starting from scratch. Thanks in advance!