What is wrong with my 7 week old son? ?

Then cry. You'll feel better after a good cry. The anxiety will be a lot less. To ease your mind, babies cry a lot. Often for no reason. The pediatrician told me that crying actually helps brain development. Just do all that you can for him, as you have been. Then walk the floor with him. And it's ok to put him down for a few minutes to give yourself a breather. Go in the other room to clear your head, then resume the mommy duties. It'll get better, I promiise.