My DS is 14 weeks old, and seems unable to relax. Getting him to sleep by any means is a nightmare, he fights it like crazy. If I'm carrying him upright he always has his head up (and consequently has great head control for his age!) like a meerkat, and he doesn't relax into me, even if he's exhausted. He cries in both the pushchair and the car seat, and just seems so 'rigid' somehow - I can feel the tenseness in his body.
He's unhappy a lot of the time, but I think it's just overtiredness as he finds it so hard to relax enough to sleep, even if I try to get him to sleep as soon as he starts to get tired. He doesn't cry as if he's in pain.
Do you think cranial osteopathy is worth a shot? He had a normal delivery, but it was very fast, not sure if that makes a difference.