Drainage from various sites likely have different time frames for healing and reasons for variations. After my husband's pancreas, spleen, pylorus, duodenum and gallbladder removal and the replacement of the portal vein, he had numerous weeks of steady drainage from a point athe middle of the long front suture line. They gave us bags like are used for colostomies. This adhered to the abdominal wall over the draining area filling with the drainage and we were able to drain off the collection daily. There was a lot of drainage, but our imagination was that the the amount of fluid used during the 14 hour surgery was draining from the interstitial tissues after the surgery. He gained about 8 pounds during the surgery as I recall likely from the fluid given during the surgery. That weight was all lost by the time the draining stopped and the wound closed. Your health care team can act on what you report to them. So count the dressing changes and frequency to give them some idea of how things are going. The body is so amazing in its healing capacity and the health care team is amazing in their support during this new experience.