DS1 is 3 and I feel a constant low-level worry about him. DH feels this less strongly but basically agrees. We have both been more concerned since having DS2 (nearly 1) because he is so different. We are just beginning the process of getting DS1 checked out in various ways (re: anxiety levels, quite severe growing pains, constant sleep problems, possibly sensory issues).
On the one hand our worries seem so nebulous; on the other hand you read a lot that parents who are consistently concerned usually turn out to be right.
So just wondering if anyone who has older children had constant niggling worries of this kind and turned out to be happily WRONG and the child in question was absolutely fine. Or - I suppose also possible - that you were sensing an 'issue' of some kind but not actually what you thought it the problem was to start with.