@Pamelac
One of the Onco nurses told me there are two different Enhertu they can put you on. Different chemo type. Maybe you can check up if the alternative is available. It may have lesser side effects. My main side effects are mouth ulcers and tiredness. I had nausea for the first three rounds but it has appeared to disappear in the last two rounds I have had. I also have it every three weeks for however long it works and I tolerate it. I find one coloxyl tablet for the first five days keeps the constipation under control