My son almost 7 months old. For the last 3 days he is pressuring while passing urine. His flow is OK. The frequency of the same almost once in an hour. Few days back we started giving him semi solids and cerelac rice. It's not that every time he applies pressure. But sometimes he does. It's all started 3 days back when he showed some sign of constipation and really struggled to poo. And there was light blood in his stool also. Now main concern is that he pressure during urination. Need to know the reason.