If you've just had major surgery, of course your body is tired. It needs time to recover and heal. Also, the anesthesia needs to get out of your system. That will cause tiredness, post op depression, and other side effects..like bad hair days as it does come through the hair follicles.
I had major exploratory surgery 2 years ago, the 1st time in May and then the 2nd time in Dec. for a nasty infection that was caused by an abscess in my abdomen. I came home w/a PICC line and a wound vacuum. Imagine trying to sleep with an IV line and a vacuum.
My husband understood the amount of pain and how tired I was by learning everything from support group meetings when we were dating and educating himself by talking to others. He put my needs ahead of his. Sex isn't the only thing in a relationship that brings a couple together. There are other ways to show someone you love them such as making a favorite meal, watching movies together, attending meetings to educate oneself, telling each other how much you appreciate and love them, etc. The list is endless.
Bring your fiance here to educate himself as to what we as IBD patients go through. If he doesn't really get that you've been through a major surgery and that it does take time to heal, have a talk with him and even bring him to one of your GI appointments so he can fully get and appreciate what you are doing to help yourself get better.
I am lucky because my husband gets it. When I had that surgery, we weren't together for almost a year due to the surgeries. The only thing on my mind was for the wound to heal as it was painful plus I was tired from the IV antibiotics. My husband bought me some books, movies, and even got me take out once I was able to eat.
We don't take each other for granted only because when we got engaged, we discussed my illness, the treatments, plus the support groups helped, and he was open with me in regards to how scared he was until I reassured him that all of my doctors are working together with me to get better. When I had my stroke 8 yrs ago, he bought me a digital camera to take up a new hobby, obtained internet access so I could stay in contact with my friends, and encouraged me every day to do my exercises from PT and OT so I could regain my strength from being paralyzed on my right side. He worked with me so I was able to take back the house hold chores. When I wasn't in the mood, he just made sure I was comfortable and not in any pain. He never pushed his needs over mine. That's just how he is and what attracted me to him...a true gentleman who's very understanding, caring, and giving.
Once we were married, we took my health issues one day at a time and just focused on what I could do, not what I couldn't. After I healed, we just played it by ear.
Definitely bring you finace here to talk to others. it will educate him. Knowledge is power.
hope this helps.