Im 29 weeks pregnant. Since this morning I have had sharp pains across my tummy coming and going, they aren't frequent and last about 5-10 seconds. It feels like a tightening sensation as my bump goes really hard. The pains seem to be getting worse, at first I thought it was constipation but I went to the toilet this morning so surely I can't become constipated in a matter of hours? I'm currently lay in the bath, if the pains carry on after this I'm going to ring the midwife just wondering if anyone else has experienced this?