I wanted to add that i always went to my appointments by myself. IT was the tail end of Covid in July of 2021 and visitors were not allowed in till 2022. The only time i ask for help was a ride for my 3 surgeries and a ride home. I asked for a retired nurse friend to attending my appointment with radiology. She sat in the waiting room. I got to come out and introduce her to the Radiology oncologist. The Dr. had just reviewed by case my chemo done my breast and tumor removal and he said radiation would only improve my chances by 2%. Side effects may cause more damage. If I was family, he said he would suggest they not do it. I comfortably declined it. All my alone visits were my checkups, my chemo infusions and my Herceptin/Perjeta infusions. My chemo infusion did not affect me until 2 days after.
It is easily a personal choice. For me, I loved taking with every RN who was assisting me, answering the various questions I had. So many had wise and honest things to share with many RNs having worked in oncology for many years. I have heard people ask Drs if they can tape the visits, so they can review what was said. For me, i used the notes app on my phone each time to note anything that was said. If I still felt i needed more info, I asked my questions in the portal. As to your husband, one can never know how a diagnosis affects the spouse until it happens. I hope you are able to talk about that with him.
Maybe go with someone for your 1st treatment until you know you are ok. I usually took 30 minutes or so before i drove away to make sure i felt ok.