Mammogram

Hi I finished treatment in May but was originally diagnosed in June 2020. To date I still haven’t had any sort of check up or follow up scan / mammogram. I was told by my oncologist it should have been on the first anniversary of my surgery which would have been 4 months ago. Upon calling a nurse she said there is still a few months to wait because of a backlog and unless I have new symptoms and get referred urgently I will just have to wait. I had bilateral breast cancer which went into my lymph nodes and one side didn’t have a lump so I was assured I would be kept an eye on.  I feel really let down, is anyone else had this kind of problem?