Welcome @dskor. Four weeks is not a very long time after such a major surgery. You can read what some other members have said about the healing process after colon surgery in this related discussion.

- Problems months after colon resection surgery: What Helps? https://connect.mayoclinic.org/discussion/three-months-after-colon-surgery/

May I ask what condition led to your needing a colectomy? I'd like to connect you with other patients like you.