It happened to me about a month too bro . Mines ok now I think , When you're loading the game does it come up with the option to play online?,and also, does it take longer than usual to load the game ? You might need to either reset the cache or log out of PSN ( Or xbox , whatever you are on ) and log back in , it worked for me. If not , there might be some sort of issue with the connection from your console to the online cloud servers , by any chance , do you use wired or wireless connection , you see , I was on wired and I switched to wireless internet and I was ok .
Hope that helps .