I kinda figured lack of field bees must be the cause but I still find it hard to believe that they still are raising more brood with so little supplies.
They were raising brood because they were fresh mated queens. Good fresh mated queens will take off like a shot, laying more brood (sometimes) than she has bees or feed to take care of it. Put on feeders when you feel better, sorry to hear your not up to spit. Try a teaspoon of honey a day, will keep the doctor away, especially if you have an apple with it!