Is my save broken? or is my game broken?

Hi, is anyone having a issue with their game breaking overnight? I was playing the game perfectly fine on Tuesday, no issues whatsoever, I turn the game on, on Wednesday and suddenly my game is broken? It won't save, it's not registering my save; my sims aged up (into a child & infant), changed their appearance in CAS, the time was like 5PM (in game). Saved & exited, went back into that save, my sims were their previous age (toddler & baby), their appearance was totally different (how they aged up by default before me editing it), the time was at 12:53PM or something like that- all actions I had done were there, the birthday cake blown out, the new furniture added etc.. But I suddenly can't save progress, I've tried everything, repairing my game, tried saving as a new save, tried a different family- taking my mods out. I don't know how this can happen within like a timespan of 6 hours of sleeping to turning the game on again, this is the 2nd day of it happening, I need help please!