I'm so sorry that you feel miserable. Being constipated is a horrible feeling. If you haven't already tried this idea...Grandma wasn't wrong when she said, "A prune a day keeps the doctor away". Try either a 6-8 oz glass of prune juice every morning or mix it with 4 oz of coffee. Both stimulate the bowels. You may need a few days depending on how backed up you are.
Call the doctor you trust the most and share your concerns. There are medical conditions that can result from intestinal surgery such as a paralyzed illius that need to be addressed.
Never be afraid or embarrassed to discuss what is concerning to you. It's your life.