Cottage Cheese

Has anyone recently experienced thier cottage cheese going bad faster than normal? I have used cottage cheese my entire adult life and never had a problem with 1qt containers going bad in less than a week. It seems the past several months about 3 days is all I can get once I open it. I have tried nearly all the brands including the generics. The package says use within 7 days, I can’t get it to go that far. My fridge seems to be normally cool, I moved the setting to the coldest. I plan to get a thermometer this week and double check it.