Im 29 weeks pg with my 2nd, i've been having pains for a few weeks but tonight they seem extra painful, the pain is realy low down and it feels like i'm going to burst, my bump is realy hard and it feels like the baby is pushing down. I did'nt have pains like this the first time but dd's head was engaged at 30 weeks. is this just braxton hicksa? Could it be that the babys head is engaged and pushing down already?