If the pain is "getting worse" you need to get it reviewed, either by your ob/surgeon or by your GP. It could be that there is a collection of fluid behind the wound - which can be very painful (speaking from first hand experience here) - they should do an ultrasound to check what's going on in there. You may need some antiobiotics if there's some fluid lying around. It's important to be assertive, and stress the fact that the pain is *worsening* - it is not normal to suddenly be getting increased pain this long after surgery.