@Glynnis in the end I had the AZ as was going to wait too long for another option. I am mid 60's and the only side effects I had was tiredness the next day, and the day after I felt like I was coming down with a cold/flu, but that feeling subsided by the end of the day. I have my second jab in early September. Many reasons I would have preferred the Pzifer and the main one was that I would be fully covered in the space of three weeks.
I hope you can get your jab as soon as you want. Could you speak with your oncologist earlier than next month? Take care.