atomasev Try loading a different household within that save, and let me know whether it helps.
Separately, please open Documents > Electronic Arts > The Sims 4 and delete any lastexception files you find. Try to load your main household again, and if and when the game hangs forever (say, more than five minutes), look for a new LE. If you see one, open the file, delete the first line of text, and attach it to a reply here. Some of the errors that cause endless loading are fixable in one way or another.