I’m so sorry that happened to you. Those antibiotics are tough. I had to take them as well in order to be healthy enough for the surgery because my episodes just kept coming. I lost so much weight because they made me sick, and I too was so fearful they would have to cancel .
I hope it all works out for you. I am 72 and the surgery went well. I’m 6 weeks out now and things are going pretty well. I’m just hoping my digestive system straightens itself out over time. But mostly I just pray I never have another episode of diverticulitis again.
Good luck to you.