Lise - between 4-6 weeks they have a wonder week where most of it is related to a developmental change. They are awake more, perceive sensation / taste / sound / movement differently and it is stressful for them. They cry because they don't know how to manage all of the changes. All they want and need is closeness to mummy. You can't spoil them at this age. Cuddle them, put them into a sling and carry them close to you. Massage (although it is harder in winter when you are trying not to snap freeze them!!) - do anything you need to to settle them. And do it without guilt It will pass soon. And then you get the next one