I'm so sorry to hear this.
My ovarian cancer was only caught early because I knew something was very wrong, and I became a complete pain in the arse until one doctor, who'd just happened to have been to an ovarian cancer awareness conference the week before, cottoned on that some of what I was describing were things associated with ovarian cancer. However by that point I was "known" at the surgery, the receptionists facial expressions would visibly change when I entered, and I had a shouting match with a nurse practitioner who did urine tests and told me there was nothing wrong with me.
I'm obstinate and wouldn't back down.
Unlike a dear friend who was fobbed off with "it's probably gastro" by her doctor for TWO years, then died of stage 4 ovarian cancer. She was such a kind, lovely person, who accepted what medical practitioners told her because they knew better than she did.
I hate the fact that the only reason I didn't end up like her is because I dug my heels in and stubbornly refused to accept what I was told. It shouldn't be like that.
It was the same when I was advocating for my mum when she had dementia. But that's another story, one which left me hating the whole NHS.
Anyway, as has been pointed out, overall doctors feel fewer than 16% of consultations are unnecessary, so if any doctor imagines it to be 80% or anywhere near that they are the problem not their patients.