pg with no 3 and having bad period type cramps for over a week - the sort that meant onset of labour at week 39 with the other 2. Really can't face prem baby with dh working abroad and no family local to help with boys. Has anyone else had these twinges and did they go away? MW says breezily 'don't worry, your uterus is probably just more sensitive this time around'.... do you think she could be right?