Raw meat

Quick question! I made some swedish meatballs with mash potatoes and steam veggies for supper last night. it was delish! however, I still have alot of marinated raw meat to make the meatballs from yesterday and had put it back in the refrigerator. is this safe? I usually make enough for just me my husband and the kids. But i made alot. so I want to make sure it's safe and not cause food poisoning if I use the rest..