You really have a lot to deal with, don’t you? 21 treatments in 2 years is a lot. I thought I’d had a lot with 18 over five years -- in 2020, 2022, and this year. My final treatment was 2 months ago and I’ve been gradually getting back my energy, a little bit every day. I had surgery before the first two times, but not this time, so I feel like I’m recovering more quickly. That’s something to keep in mind, that your body is not only recovering from chemo but also healing from the surgery.
I too have/had trouble with my stomach, which my GP suspects is caused by all the steroids that are part of the treatments and which irritate tissues. He prescribed Pantoprazole which really helped. I started with 2 doses a day, but am being weaned off it and I’ve been fine.
You didn’t mention this, but one side effect that I’ve had with all three sets of treatments is urinary incontinence. It would start almost right away after a treatment and would ease up before the next one. Thankfully, that’s also behind me, too.