My son started life as an extremely calm baby--everyone commented on how he almost never cried, and when he did cry we just had to take care of whatever was bothering him (wet diaper, hunger, whatever) and he would immediately stop crying. He is now 3.5 months old, and over the past couple of months he has become increasingly fussy. He isn't crying for long periods of time (usually no more than a few minutes), but he is crying much more frequently, much more loudly, and it is no longer always easy to figure out why he is crying. On the one hand I assume that he is just getting more opinionated and more aware of the world. But I also worry that maybe something is hurting him or bothering him that I could fix if I could just figure out what it is. He is our first child, so I have no experience with this. Any thoughts on if this is normal or what might be going on? Thanks!
Me, my wife, our son (2.5), and our daughter (5 months)