Hi i seem to have a large problem, im in my first year of keeping bees and brought a nuc last year which over wintered very. 10 days ago they swamed, i checked on them the next day only to find there were no eggs or larve, i checked again yesterday and still no eggs. how long before new queen starts to lay, dose this sound like the old queen died and if their is no queen at all is it best to introduce a new queen or one still in her cell many thanks for your time