I had the same thing with DS1 & 2. They were long, big babies (56cm, 4.2kg and 57cm, 3.95kg) and I am fairly short. They were both pretty active babies too. I also had slight polyhydramniosis with DS1 so my belly was just enormous. I felt like I might explode with every movement in late pg and my belly was tender to even touch. It's a terrible feeling. I hope he moves or something to give you some relief.