If this is the first time your wife is about to deliver, then, the cervix
and the lower parts of the birth canal may take some time to prepare for delivery. This could be the reason for the cramping pain. It is not necessary that one should deliver on the due date. Delivery can be done safely up to 2 weeks after the due date with proper monitoring. Please see that she takes sufficient rest in left lateral position, has no constipation
and monitors the fetal movements. The pain may be alleviated to some extent by application of coconut oil on the abdomen and applying a warm wet cloth over the area. This is an old remedy for the pain. It also helps to facilitate synchronization of the contractions. Ask her to watch out for any vaginal discharge
, pain radiating to the thighs and back; in such a case, the doctor must be immediately informed. Good luck.